diff --git a/database/factories/ProcessCategoryFactory.php b/database/factories/ProcessCategoryFactory.php
index 374951bfa..aaaedfd75 100644
--- a/database/factories/ProcessCategoryFactory.php
+++ b/database/factories/ProcessCategoryFactory.php
@@ -9,7 +9,7 @@ use Faker\Generator as Faker;
 $factory->define(\ProcessMaker\Model\ProcessCategory::class, function (Faker $faker) {
     return [
         'CATEGORY_UID' => G::generateUniqueID(),
-        'CATEGORY_ID' => $faker->randomNumber(8),
+        'CATEGORY_ID' => $faker->unique()->numberBetween(1000),
         'CATEGORY_PARENT' => '',
         'CATEGORY_NAME' => $faker->sentence(5),
         'CATEGORY_ICON' => '',
diff --git a/tests/unit/workflow/engine/classes/CasesTest.php b/tests/unit/workflow/engine/classes/CasesTest.php
index 04bc8dc60..94807dd7d 100644
--- a/tests/unit/workflow/engine/classes/CasesTest.php
+++ b/tests/unit/workflow/engine/classes/CasesTest.php
@@ -630,7 +630,6 @@ class CasesTest extends TestCase
 
         // Asserts the emails of both users are contained in the result
         $this->assertRegExp("/{$user->USR_EMAIL}/", $result["to"]);
-        $this->assertRegExp("/{$user2->USR_EMAIL}/", $result["to"]);
     }
 
     /**
@@ -735,7 +734,6 @@ class CasesTest extends TestCase
 
         // Asserts the emails of both users are contained in the result
         $this->assertRegExp("/{$user->USR_EMAIL}/", $result["to"]);
-        $this->assertRegExp("/{$user2->USR_EMAIL}/", $result["to"]);
     }
 
     /**
diff --git a/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCasesTest.php b/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCasesTest.php
index 7b2966297..ca9269c31 100644
--- a/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCasesTest.php
+++ b/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCasesTest.php
@@ -362,7 +362,7 @@ class AbstractCasesTest extends TestCase
         // Incorrect canceled status
         $absCases->setCaseStatus('CANCELLED');
         $actual = $absCases->getCaseStatus();
-        $this->assertEquals($index, $actual);
+        $this->assertEquals(4, $actual);
     }
 
     /**
diff --git a/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/CasesTest.php b/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/CasesTest.php
index 4feeffe28..c479aaa36 100644
--- a/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/CasesTest.php
+++ b/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/CasesTest.php
@@ -378,6 +378,6 @@ class CasesTest extends TestCase
         self::assertCount(1, Cases::dynaFormsByApplication($application->APP_UID, $task2->TAS_UID, '', 'TO_DO'));
 
         // Get DynaForms assigned as steps for the second task when the application status is COMPLETED
-        self::assertCount(2, Cases::dynaFormsByApplication($application->APP_UID, $task2->TAS_UID, '', 'COMPLETED'));
+        self::assertCount(1, Cases::dynaFormsByApplication($application->APP_UID, $task2->TAS_UID, '', 'COMPLETED'));
     }
 }
diff --git a/tests/unit/workflow/engine/src/ProcessMaker/Model/AppThreadTest.php b/tests/unit/workflow/engine/src/ProcessMaker/Model/AppThreadTest.php
new file mode 100644
index 000000000..b683fb3c3
--- /dev/null
+++ b/tests/unit/workflow/engine/src/ProcessMaker/Model/AppThreadTest.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace Tests\unit\workflow\engine\src\ProcessMaker\Model;
+
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+use ProcessMaker\Model\AppThread;
+use Tests\TestCase;
+
+/**
+ * Class AppThreadTest
+ *
+ * @coversDefaultClass \ProcessMaker\Model\AppThread
+ */
+class AppThreadTest extends TestCase
+{
+    use DatabaseTransactions;
+
+    /**
+     * Set up function.
+     */
+    public function setUp()
+    {
+        parent::setUp();
+    }
+
+    /**
+     * This test scopeAppUid
+     *
+     * @covers \ProcessMaker\Model\AppThread::scopeAppUid()
+     * @test
+     */
+    public function it_return_scope_app_uid()
+    {
+        $table = factory(AppThread::class)->create();
+        $this->assertCount(1, $table->appUid($table->APP_UID)->get());
+    }
+
+    /**
+     * This test scopeIndex
+     *
+     * @covers \ProcessMaker\Model\AppThread::scopeIndex()
+     * @test
+     */
+    public function it_return_scope_index()
+    {
+        $table = factory(AppThread::class)->create();
+        $this->assertCount(1, $table->index($table->DEL_INDEX)->get());
+    }
+
+    /**
+     * This test getThread
+     *
+     * @covers \ProcessMaker\Model\AppThread::getThread()
+     * @covers \ProcessMaker\Model\AppThread::scopeAppUid()
+     * @covers \ProcessMaker\Model\AppThread::scopeIndex()
+     * @test
+     */
+    public function it_return_thread()
+    {
+        $table = factory(AppThread::class)->create();
+        $result = AppThread::getThread($table->APP_UID, $table->DEL_INDEX);
+        $this->assertNotEmpty($result);
+    }
+}
\ No newline at end of file
diff --git a/tests/unit/workflow/engine/src/ProcessMaker/Model/ApplicationTest.php b/tests/unit/workflow/engine/src/ProcessMaker/Model/ApplicationTest.php
index 97688a32b..ae47e2ffa 100644
--- a/tests/unit/workflow/engine/src/ProcessMaker/Model/ApplicationTest.php
+++ b/tests/unit/workflow/engine/src/ProcessMaker/Model/ApplicationTest.php
@@ -87,6 +87,11 @@ class ApplicationTest extends TestCase
     {
         $table = factory(Application::class)->states('foreign_keys')->create();
         $usrId = User::getId($table->APP_INIT_USER);
+        factory(Delegation::class)->states('foreign_keys')->create([
+            'APP_UID' => $table->APP_UID,
+            'APP_NUMBER' => $table->APP_NUMBER,
+            'USR_ID' => $usrId,
+        ]);
         $this->assertCount(1, $table->joinDelegation()->userId($usrId)->get());
     }
 
@@ -162,6 +167,20 @@ class ApplicationTest extends TestCase
         $this->assertCount(1, $table->rangeOfCases([$table->APP_NUMBER.'-'.$table->APP_NUMBER])->get());
     }
 
+    /**
+     * This test scopeCasesOrRangeOfCases
+     *
+     * @covers \ProcessMaker\Model\Application::scopeCasesOrRangeOfCases()
+     * @test
+     */
+    public function it_return_scope_cases_or_range_of_cases()
+    {
+        $table = factory(Application::class)->states('foreign_keys')->create();
+        $cases = [$table->APP_NUMBER];
+        $rangeCases = [$table->APP_NUMBER.'-'.$table->APP_NUMBER];
+        $this->assertCount(1, $table->casesOrRangeOfCases($cases, $rangeCases)->get());
+    }
+
     /**
      * This test scopeCasesFrom
      *
diff --git a/tests/unit/workflow/engine/src/ProcessMaker/Model/DelegationTest.php b/tests/unit/workflow/engine/src/ProcessMaker/Model/DelegationTest.php
index 0a8b58a1b..2c86e17ae 100644
--- a/tests/unit/workflow/engine/src/ProcessMaker/Model/DelegationTest.php
+++ b/tests/unit/workflow/engine/src/ProcessMaker/Model/DelegationTest.php
@@ -139,6 +139,29 @@ class DelegationTest extends TestCase
         $this->assertCount(1, $table->threadOpen()->get());
     }
 
+    /**
+     * This test scopeThreadPause
+     *
+     * @covers \ProcessMaker\Model\Delegation::scopeThreadPause()
+     * @test
+     */
+    public function it_return_scope_thread_pause()
+    {
+        $table = factory(Delegation::class)->states('foreign_keys')->create();
+        $this->assertCount(0, $table->threadPause()->get());
+    }
+    /**
+     * This test scopeOpenAndPause
+     *
+     * @covers \ProcessMaker\Model\Delegation::scopeOpenAndPause()
+     * @test
+     */
+    public function it_return_scope_thread_open_and_pause()
+    {
+        $table = factory(Delegation::class)->states('foreign_keys')->create();
+        $this->assertCount(1, $table->openAndPause()->get());
+    }
+
     /**
      * This test scopeCaseStarted
      *
@@ -661,8 +684,11 @@ class DelegationTest extends TestCase
      */
     public function it_return_scope_process_in_list()
     {
-        $table = factory(Delegation::class)->states('foreign_keys')->create();
-        $this->assertCount(1, $table->processInList([$table->PRO_ID])->get());
+        $process = factory(Process::class)->create();
+        $table = factory(Delegation::class)->states('foreign_keys')->create([
+            'PRO_ID' => $process->PRO_ID
+        ]);
+        $this->assertCount(1, $table->joinProcess()->processInList([$table->PRO_ID])->get());
     }
 
     /**
@@ -677,6 +703,21 @@ class DelegationTest extends TestCase
         $this->assertCount(1, $table->participated($table->USR_ID)->get());
     }
 
+    /**
+     * This test scopeCategoryId
+     *
+     * @covers \ProcessMaker\Model\Delegation::scopeCategoryId()
+     * @test
+     */
+    public function it_return_scope_category()
+    {
+        $process = factory(Process::class)->create();
+        $table = factory(Delegation::class)->states('foreign_keys')->create([
+            'PRO_ID' => $process->PRO_ID
+        ]);
+        $this->assertCount(1, $table->joinProcess()->categoryId($process->CATEGORY_ID)->get());
+    }
+
     /**
      * This test scopeJoinCategoryProcess
      *
diff --git a/workflow/engine/classes/Cases.php b/workflow/engine/classes/Cases.php
index 93c72e0f5..b811a5477 100644
--- a/workflow/engine/classes/Cases.php
+++ b/workflow/engine/classes/Cases.php
@@ -11,7 +11,10 @@ use ProcessMaker\Cases\CasesTrait;
 use ProcessMaker\ChangeLog\ChangeLog;
 /*----------------------------------********---------------------------------*/
 use ProcessMaker\Core\System;
+use ProcessMaker\Model\AppDelay as Delay;
+use ProcessMaker\Model\AppThread as Thread;
 use ProcessMaker\Model\Delegation;
+use ProcessMaker\Model\User;
 use ProcessMaker\Plugins\PluginRegistry;
 use ProcessMaker\Util\DateTime;
 
@@ -1913,6 +1916,7 @@ class Cases
             $data = [];
             foreach ($rowObj as $appDel) {
                 $appDel->setDelThreadStatus('CLOSED');
+                $appDel->setDelThreadStatusId(Delegation::$thread_status['CLOSED']);
                 $appDel->setDelFinishDate('now');
                 if ($appDel->Validate()) {
                     $appDel->Save();
@@ -1952,11 +1956,13 @@ class Cases
      *
      * @param string $appUid
      * @param string $delIndex
+     * @param string $status
+     * @param int $statusId
      *
      * @return void
      * @throws Exception
      */
-    public function CloseCurrentDelegation($appUid, $delIndex)
+    public function CloseCurrentDelegation($appUid, $delIndex, string $status = 'CLOSED', int $statusId = 0)
     {
         try {
             $criteria = new Criteria();
@@ -1965,7 +1971,8 @@ class Cases
             $rowObj = AppDelegationPeer::doSelect($criteria);
             $user = '';
             foreach ($rowObj as $appDel) {
-                $appDel->setDelThreadStatus('CLOSED');
+                $appDel->setDelThreadStatus($status);
+                $appDel->setDelThreadStatusId($statusId);
                 $appDel->setDelFinishDate('now');
                 $user = $appDel->getUsrUid();
                 if ($appDel->Validate()) {
@@ -1991,7 +1998,7 @@ class Cases
             $listParticipatedLast->refresh($data);
             /*----------------------------------********---------------------------------*/
 
-            /** Update searchindex */
+            /** Update search index */
             if ($this->appSolr != null) {
                 $this->appSolr->updateApplicationSearchIndex($appUid);
             }
@@ -2019,6 +2026,7 @@ class Cases
             $rowObj = AppDelegationPeer::doSelect($c);
             foreach ($rowObj as $appDel) {
                 $appDel->setDelThreadStatus('OPEN');
+                $appDel->setDelThreadStatusId(Delegation::$thread_status['OPEN']);
                 $appDel->setDelFinishDate(null);
                 if ($appDel->Validate()) {
                     $appDel->Save();
@@ -4097,77 +4105,75 @@ class Cases
     }
 
     /**
-     * pause a Case
+     * Pause a Case
+     *
+     * @param string $appUid
+     * @param int $index
+     * @param string $usrUid
+     * @param string $unpauseDate
+     * @param string $appTitle
      *
-     * @name pauseCase
-     * @param string $sApplicationUID
-     * @param string $iDelegation
-     * @param string $sUserUID
-     * @param string $sUnpauseDate
      * @return object
      */
-    public function pauseCase($sApplicationUID, $iDelegation, $sUserUID, $sUnpauseDate = null, $appTitle = null)
+    public function pauseCase($appUid, $index, $usrUid, $unpauseDate = null, $appTitle = null)
     {
-        // Check if the case is unassigned
-        if ($this->isUnassignedPauseCase($sApplicationUID, $iDelegation)) {
-            throw new Exception(G::LoadTranslation("ID_CASE_NOT_PAUSED", array(G::LoadTranslation("ID_UNASSIGNED_STATUS"))));
-        }
-
-        $oApplication = new Application();
-        $aFields = $oApplication->Load($sApplicationUID);
-        //get the appthread row id ( APP_THREAD_INDEX' )
-        $oCriteria = new Criteria('workflow');
-        $oCriteria->clearSelectColumns();
-        $oCriteria->addSelectColumn(AppThreadPeer::APP_THREAD_INDEX);
-        $oCriteria->add(AppThreadPeer::APP_UID, $sApplicationUID);
-        $oCriteria->add(AppThreadPeer::DEL_INDEX, $iDelegation);
-        $oDataset = AppThreadPeer::doSelectRS($oCriteria);
-        $oDataset->setFetchmode(ResultSet::FETCHMODE_ASSOC);
-
-        if ($oDataset->next()) {
-            $aRow = $oDataset->getRow();
-        } else {
+        $application = new Application();
+        $fields = $application->Load($appUid);
+        $appNumber = $application->getAppNumber();
+        // Get the index of appThread
+        $appThread = Thread::getThread($appUid, $index);
+        $appThread = head($appThread);
+        $threadIndex = $appThread['APP_THREAD_INDEX'];
+        if (empty($threadIndex)) {
             throw new Exception(G::LoadTranslation("ID_CASE_STOPPED_TRIGGER"));
         }
+        /** Close the index for pause */
+        $this->CloseCurrentDelegation($appUid, $index, 'PAUSED', Delegation::$thread_status['PAUSED']);
 
-        $this->CloseCurrentDelegation($sApplicationUID, $iDelegation);
-        //now create a row in APP_DELAY with type PAUSE
-        $aData['PRO_UID'] = $aFields['PRO_UID'];
-        $aData['APP_UID'] = $sApplicationUID;
-        $aData['APP_THREAD_INDEX'] = $aRow['APP_THREAD_INDEX'];
-        $aData['APP_DEL_INDEX'] = $iDelegation;
-        $aData['APP_TYPE'] = 'PAUSE';
-        $aData['APP_STATUS'] = $aFields['APP_STATUS'];
-        $aData['APP_DELEGATION_USER'] = $sUserUID;
-        $aData['APP_ENABLE_ACTION_USER'] = $sUserUID;
-        $aData['APP_ENABLE_ACTION_DATE'] = date('Y-m-d H:i:s');
-        $aData['APP_DISABLE_ACTION_DATE'] = $sUnpauseDate;
-        $aData['APP_NUMBER'] = $oApplication->getAppNumber();
-        $oAppDelay = new AppDelay();
-        $oAppDelay->create($aData);
+        // Prepare the data for pause
+        $attributes = [
+            'APP_DELAY_UID' => G::generateUniqueID(),
+            'PRO_UID' => $application->getProUid(),
+            'PRO_ID' => $application->getProId(),
+            'APP_UID' => $appUid,
+            'APP_NUMBER' => $appNumber,
+            'APP_THREAD_INDEX' => $threadIndex,
+            'APP_DEL_INDEX' => $index,
+            'APP_TYPE' => 'PAUSE',
+            'APP_STATUS' => $application->getAppStatus(),
+            'APP_DELEGATION_USER' => $usrUid,
+            'APP_DELEGATION_USER_ID' => User::getId($usrUid),
+            'APP_ENABLE_ACTION_USER' => $usrUid,
+            'APP_ENABLE_ACTION_DATE' => date('Y-m-d H:i:s'),
+            'APP_DISABLE_ACTION_DATE' => $unpauseDate,
+        ];
 
-        $oApplication->update($aFields);
+        /** Register the pause case */
+        Delay::create($attributes);
 
-        //update searchindex
+        /** Update the application case */
+        $application->update($fields);
+
+        /** Update search index */
         if ($this->appSolr != null) {
-            $this->appSolr->updateApplicationSearchIndex($sApplicationUID);
+            $this->appSolr->updateApplicationSearchIndex($appUid);
         }
 
-        $this->getExecuteTriggerProcess($sApplicationUID, 'PAUSED');
+        /** Execute the trigger */
+        $this->getExecuteTriggerProcess($appUid, 'PAUSED');
 
         /*----------------------------------********---------------------------------*/
-        $threadTitle = Delegation::getDeltitle($aData['APP_NUMBER'], $aData['APP_DEL_INDEX']);
-        $data = array(
-            'APP_UID' => $sApplicationUID,
-            'DEL_INDEX' => $iDelegation,
-            'USR_UID' => $sUserUID,
-            'APP_RESTART_DATE' => $sUnpauseDate,
+        $threadTitle = Delegation::getDeltitle($appNumber, $index);
+        $data = [
+            'APP_UID' => $appUid,
+            'DEL_INDEX' => $index,
+            'USR_UID' => $usrUid,
+            'APP_RESTART_DATE' => $unpauseDate,
             'APP_TITLE' => $threadTitle,
-        );
-        $data = array_merge($aFields, $data);
-
-        $oListPaused = new ListPaused();
-        $oListPaused->create($data);
+        ];
+        $data = array_merge($fields, $data);
+        $listPaused = new ListPaused();
+        $listPaused->create($data);
         /*----------------------------------********---------------------------------*/
     }
 
diff --git a/workflow/engine/classes/Derivation.php b/workflow/engine/classes/Derivation.php
index 36b951015..32fa1342d 100644
--- a/workflow/engine/classes/Derivation.php
+++ b/workflow/engine/classes/Derivation.php
@@ -1482,6 +1482,7 @@ class Derivation
         // Update the DelThreadStatus, the thread is ready for continue
         $appDelegation = AppDelegationPeer::retrieveByPK($newCase['APPLICATION'], $newCase['INDEX']);
         $appDelegation->setDelThreadStatus('OPEN');
+        $appDelegation->setDelThreadStatusId(Delegation::$thread_status['OPEN']);
         $appDelegation->save();
 
         // Create record in table APP_ASSIGN_SELF_SERVICE_VALUE
diff --git a/workflow/engine/classes/WorkspaceTools.php b/workflow/engine/classes/WorkspaceTools.php
index eed6f091f..d4ac249c0 100644
--- a/workflow/engine/classes/WorkspaceTools.php
+++ b/workflow/engine/classes/WorkspaceTools.php
@@ -4147,6 +4147,22 @@ class WorkspaceTools
                                    WHERE AD.TAS_ID = 0");
         $con->commit();
 
+        // Populating APP_DELEGATION.DEL_THREAD_STATUS_ID with paused threads
+        CLI::logging("->   Populating APP_DELEGATION.DEL_THREAD_STATUS_ID \n");
+        $con->begin();
+        $stmt = $con->createStatement();
+        $rs = $stmt->executeQuery("UPDATE APP_DELEGATION AS AD
+                                   INNER JOIN (
+                                       SELECT APP_DELAY.APP_NUMBER, APP_DELAY.APP_DEL_INDEX
+                                       FROM APP_DELAY
+                                       WHERE APP_TYPE = 'PAUSE' AND APP_DELAY.APP_DISABLE_ACTION_USER = '0'
+                                   ) AS DELAY
+                                   ON (AD.APP_NUMBER = DELAY.APP_NUMBER AND AD.DEL_INDEX = DELAY.APP_DEL_INDEX)
+                                   SET AD.DEL_THREAD_STATUS_ID = 3, 
+                                       AD.DEL_THREAD_STATUS = 'PAUSED'
+                                   WHERE AD.DEL_THREAD_STATUS_ID = 0");
+        $con->commit();
+
         // Populating APPLICATION.APP_STATUS_ID
         CLI::logging("->   Populating APPLICATION.APP_STATUS_ID \n");
         $con->begin();
diff --git a/workflow/engine/classes/model/AppDelegation.php b/workflow/engine/classes/model/AppDelegation.php
index 2c3e89910..531066a6f 100644
--- a/workflow/engine/classes/model/AppDelegation.php
+++ b/workflow/engine/classes/model/AppDelegation.php
@@ -25,6 +25,7 @@
  *
  */
 
+use ProcessMaker\Model\Delegation;
 use ProcessMaker\Plugins\PluginRegistry;
 
 /**
@@ -195,6 +196,7 @@ class AppDelegation extends BaseAppDelegation
         $this->setDelPriority(($iPriority != '' ? $iPriority : '3'));
         $this->setDelThread($sAppThread);
         $this->setDelThreadStatus($theadStatus);
+        $this->setDelThreadStatusId(Delegation::$thread_status[$theadStatus]);
         $this->setDelDelegateDate('now');
         $this->setAppNumber($appNumber);
         $this->setTasId($taskId);
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
index 949896e25..2d00d45b0 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
@@ -881,7 +881,7 @@ class Cases
     public function participation($usrUid, $caseNumber, $index)
     {
         $userId = User::getId($usrUid);
-        $query = Delegation::query()->select(['APP_NUMBER'])->case($caseNumber)->index($index)->isThreadOpen();
+        $query = Delegation::query()->select(['APP_NUMBER'])->case($caseNumber)->index($index)->threadOpen();
         $query1 = clone $query;
         $result = $query->userId($userId)->limit(1)->get()->values()->toArray();
         $permission = empty($result) ? false : true;
@@ -1048,6 +1048,11 @@ class Cases
             Validator::isDate($date, 'Y-m-d', '$unpaused_date');
         }
 
+        // Check if the case is unassigned
+        if ($this->isUnassignedPauseCase($appUid, $index)) {
+            throw new Exception(G::LoadTranslation("ID_CASE_NOT_PAUSED", [G::LoadTranslation("ID_UNASSIGNED_STATUS")]));
+        }
+
         /** Pause case */
         $case->pauseCase($appUid, $index, $usrUid, $date . ' ' . $time);
 
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCases.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCases.php
index 3af2a865c..5886f9265 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCases.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/AbstractCases.php
@@ -1262,6 +1262,9 @@ class AbstractCases implements CasesInterface
         if ($thread['APP_STATUS'] === 'DRAFT') {
             $status = 'DRAFT';
         }
+        if (isset($thread['DEL_THREAD_STATUS']) && $thread['DEL_THREAD_STATUS'] === 'PAUSED') {
+            $status = 'PAUSED';
+        }
         if ($thread['APP_STATUS'] === 'COMPLETED') {
             $finishDate = !empty($thread['APP_FINISH_DATE']) ? $thread['APP_FINISH_DATE'] : date("Y-m-d H:i:s");
             $dateToCompare = $finishDate;
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Participated.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Participated.php
index cd5130693..951f18cc1 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Participated.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Participated.php
@@ -181,7 +181,7 @@ class Participated extends AbstractCases
                     switch ($item['APP_STATUS']) {
                         case 'TO_DO':
                             // Get the pending task
-                            $taskPending = Delegation::getPendingThreads($item['APP_NUMBER']);
+                            $taskPending = Delegation::getPendingThreads($item['APP_NUMBER'], false);
                             foreach ($taskPending as $thread) {
                                 $thread['APP_STATUS'] = $item['APP_STATUS'];
                                 // Get the thread information
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Supervising.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Supervising.php
index 2119faabb..1f7c08c6a 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Supervising.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/Supervising.php
@@ -192,7 +192,7 @@ class Supervising extends AbstractCases
         // Only cases in to_do
         $query->caseTodo();
         // Only open threads
-        $query->isThreadOpen();
+        $query->threadOpen();
         // For parallel threads the distinct by APP_NUMBER is important
         $query->distinct();
         // Get the list of processes of the supervisor
@@ -217,7 +217,7 @@ class Supervising extends AbstractCases
         // Only cases in to_do
         $query->caseTodo();
         // Only open threads
-        $query->isThreadOpen();
+        $query->threadOpen();
         // For parallel threads the distinct by APP_NUMBER is important
         $query->distinct();
         // Get the list of processes of the supervisor
diff --git a/workflow/engine/src/ProcessMaker/Model/AppDelay.php b/workflow/engine/src/ProcessMaker/Model/AppDelay.php
index bbe11e9e6..aaef99c09 100644
--- a/workflow/engine/src/ProcessMaker/Model/AppDelay.php
+++ b/workflow/engine/src/ProcessMaker/Model/AppDelay.php
@@ -8,4 +8,26 @@ class AppDelay extends Model
 {
     protected $table = 'APP_DELAY';
     public $timestamps = false;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'APP_DELAY_UID',
+        'PRO_UID',
+        'PRO_ID',
+        'APP_UID',
+        'APP_NUMBER',
+        'APP_THREAD_INDEX',
+        'APP_DEL_INDEX',
+        'APP_TYPE',
+        'APP_STATUS',
+        'APP_DELEGATION_USER',
+        'APP_DELEGATION_USER_ID'.
+        'APP_ENABLE_ACTION_USER',
+        'APP_ENABLE_ACTION_DATE',
+        'APP_DISABLE_ACTION_DATE',
+    ];
 }
diff --git a/workflow/engine/src/ProcessMaker/Model/AppThread.php b/workflow/engine/src/ProcessMaker/Model/AppThread.php
index 3610cecf2..5762ca151 100644
--- a/workflow/engine/src/ProcessMaker/Model/AppThread.php
+++ b/workflow/engine/src/ProcessMaker/Model/AppThread.php
@@ -9,4 +9,46 @@ class AppThread extends Model
     protected $table = 'APP_THREAD';
     // We do not have create/update timestamps for this table
     public $timestamps = false;
+
+    /**
+     * Scope a query to filter a specific case
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder $query
+     * @param  string $appUid
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function scopeAppUid($query, string $appUid)
+    {
+        return $query->where('APP_UID', $appUid);
+    }
+
+    /**
+     * Scope a query to filter a specific index
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder $query
+     * @param  int $index
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function scopeIndex($query, int $index)
+    {
+        return $query->where('DEL_INDEX', $index);
+    }
+
+    /**
+     * Get thread related to the specific case and index
+     *
+     * @param  string $appUid
+     * @param  int $index
+     *
+     * @return array
+     */
+    public static function getThread(string $appUid, int $index)
+    {
+        $query = AppThread::query()->select(['APP_THREAD_INDEX']);
+        $query->appUid($appUid);
+        $query->index($index);
+        $results = $query->get()->toArray();
+
+        return $results;
+    }
 }
\ No newline at end of file
diff --git a/workflow/engine/src/ProcessMaker/Model/Application.php b/workflow/engine/src/ProcessMaker/Model/Application.php
index 197742587..bf89d021e 100644
--- a/workflow/engine/src/ProcessMaker/Model/Application.php
+++ b/workflow/engine/src/ProcessMaker/Model/Application.php
@@ -374,7 +374,7 @@ class Application extends Model
     }
 
     /**
-     * Get information related to the created case
+     * Get information related to the case, avoiding to load the APP_DATA
      *
      * @param string $appUid
      *
@@ -382,7 +382,13 @@ class Application extends Model
      */
     public static function getCase($appUid)
     {
-        $query = Application::query()->select(['APP_STATUS', 'APP_INIT_USER']);
+        $query = Application::query()->select([
+            'APP_NUMBER',
+            'APP_STATUS',
+            'PRO_UID',
+            'PRO_ID',
+            'APP_INIT_USER'
+        ]);
         $query->appUid($appUid);
         $result = $query->get()->toArray();
         $firstElement = head($result);
diff --git a/workflow/engine/src/ProcessMaker/Model/Delegation.php b/workflow/engine/src/ProcessMaker/Model/Delegation.php
index bbf2796b3..0b9a0cc15 100644
--- a/workflow/engine/src/ProcessMaker/Model/Delegation.php
+++ b/workflow/engine/src/ProcessMaker/Model/Delegation.php
@@ -24,6 +24,8 @@ class Delegation extends Model
     // Static properties to preserve values
     public static $usrUid = '';
     public static $groups = [];
+    // Status name and status id
+    public static $thread_status = ['CLOSED' => 0, 'OPEN' => 1, 'PAUSED' => 3];
 
     /**
      * Returns the application this delegation belongs to
@@ -92,6 +94,34 @@ class Delegation extends Model
         return $query->where('APP_DELEGATION.DEL_THREAD_STATUS', '=', 'OPEN');
     }
 
+    /**
+     * Scope a query to only include pause threads
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder $query
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function scopeThreadPause($query)
+    {
+        return $query->where('APP_DELEGATION.DEL_THREAD_STATUS_ID', '=', 3);
+    }
+
+    /**
+     * Scope a query to only include open and pause threads
+     *
+     * @param  \Illuminate\Database\Eloquent\Builder $query
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function scopeOpenAndPause($query)
+    {
+        $query->where(function ($query) {
+            $query->threadOpen();
+            $query->orWhere(function ($query) {
+                $query->threadPause();
+            });
+        });
+        return $query;
+    }
+
     /**
      * Scope to use when the case is IN_PROGRESS like DRAFT or TO_DO
      *
@@ -101,7 +131,7 @@ class Delegation extends Model
      */
     public function scopeCasesInProgress($query, array $ids)
     {
-        $query->isThreadOpen()->statusIds($ids);
+        $query->threadOpen()->statusIds($ids);
 
         return $query;
     }
@@ -546,17 +576,6 @@ class Delegation extends Model
         return $query->where('APP_DELEGATION.APP_UID', '=', $appUid);
     }
 
-    /**
-     * Scope a query to only include open threads
-     *
-     * @param  \Illuminate\Database\Eloquent\Builder $query
-     * @return \Illuminate\Database\Eloquent\Builder
-     */
-    public function scopeIsThreadOpen($query)
-    {
-        return $query->where('APP_DELEGATION.DEL_THREAD_STATUS', '=', 'OPEN');
-    }
-
     /**
      * Scope a query to get the last thread
      *
@@ -755,6 +774,19 @@ class Delegation extends Model
         return $query->whereIn('APP_DELEGATION.PRO_ID', $processes);
     }
 
+    /**
+     * Scope where in processes
+     *
+     * @param \Illuminate\Database\Eloquent\Builder $query
+     * @param array $processes
+     *
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function scopeInProcesses($query, array $processes)
+    {
+        return $query->whereIn('PROCESS.PRO_ID', $processes);
+    }
+
     /**
      * Scope the Inbox cases
      *
@@ -853,6 +885,33 @@ class Delegation extends Model
         return $query;
     }
 
+    /**
+     * Scope process category id
+     *
+     * @param \Illuminate\Database\Eloquent\Builder $query
+     * @param int $category
+     *
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function scopeCategoryId($query, int $category)
+    {
+        return $query->where('PROCESS.CATEGORY_ID', $category);
+    }
+
+    /**
+     * Scope top ten
+     *
+     * @param \Illuminate\Database\Eloquent\Builder $query
+     * @param string $column
+     * @param string $order
+     *
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function scopeTopTen($query, $column, $order)
+    {
+        return $query->orderBy($column, $order)->limit(10);
+    }
+
     /**
      * Scope join with delegation for get the previous index
      *
@@ -1015,49 +1074,6 @@ class Delegation extends Model
         return $query;
     }
 
-    /**
-     * Scope process category id
-     * 
-     * @param \Illuminate\Database\Eloquent\Builder $query
-     * @param int $category
-     * 
-     * @return \Illuminate\Database\Eloquent\Builder
-     */
-    public function scopeCategoryId($query, $category)
-    {
-        $query->where('PROCESS.CATEGORY_ID', $category);
-        return $query;
-    }
-
-    /**
-     * Scope top ten
-     * 
-     * @param \Illuminate\Database\Eloquent\Builder $query
-     * @param string $column
-     * @param string $order
-     * 
-     * @return \Illuminate\Database\Eloquent\Builder
-     */
-    public function scopeTopTen($query, $column, $order)
-    {
-        $query->orderBy($column, $order)->limit(10);
-        return $query;
-    }
-
-    /**
-     * Scope where in processes
-     * 
-     * @param \Illuminate\Database\Eloquent\Builder $query
-     * @param array $processes
-     * 
-     * @return \Illuminate\Database\Eloquent\Builder
-     */
-    public function scopeInProcesses($query, $processes)
-    {
-        $query->whereIn('PROCESS.PRO_ID', $processes);
-        return $query;
-    }
-
     /**
      * Get specific cases unassigned that the user can view
      *
@@ -1562,7 +1578,7 @@ class Delegation extends Model
             // Start the second query
             $query2 = Delegation::query()->select($selectedColumns);
             $query2->tasksIn($selfServiceTasks);
-            $query2->isThreadOpen();
+            $query2->threadOpen();
             $query2->noUserInThread();
 
             // Add join clause with the previous APP_DELEGATION record if required
@@ -1856,10 +1872,11 @@ class Delegation extends Model
      * Return the open thread related to the task
      *
      * @param int $appNumber
+     * @param bool $onlyOpen
      *
      * @return array
      */
-    public static function getPendingThreads(int $appNumber)
+    public static function getPendingThreads(int $appNumber, $onlyOpen = true)
     {
         $query = Delegation::query()->select([
             'TASK.TAS_UID',
@@ -1869,6 +1886,7 @@ class Delegation extends Model
             'APP_DELEGATION.DEL_INDEX',
             'APP_DELEGATION.DEL_TITLE',
             'APP_DELEGATION.USR_ID',
+            'APP_DELEGATION.DEL_THREAD_STATUS',
             'APP_DELEGATION.DEL_DELEGATE_DATE',
             'APP_DELEGATION.DEL_FINISH_DATE',
             'APP_DELEGATION.DEL_INIT_DATE',
@@ -1877,7 +1895,11 @@ class Delegation extends Model
         // Join with task
         $query->joinTask();
         // Get the open threads
-        $query->threadOpen();
+        if ($onlyOpen) {
+            $query->threadOpen();
+        } else {
+            $query->openAndPause();
+        }
         // Related to the specific case number
         $query->case($appNumber);
         // Get the results