diff --git a/workflow/engine/classes/model/AppEvent.php b/workflow/engine/classes/model/AppEvent.php
index a88113fae..2f5b421c6 100755
--- a/workflow/engine/classes/model/AppEvent.php
+++ b/workflow/engine/classes/model/AppEvent.php
@@ -146,9 +146,13 @@ class AppEvent extends BaseAppEvent
             $aConditions[] = array (AppEventPeer::DEL_INDEX,AppDelegationPeer::DEL_INDEX
             );
             $oCriteria->addJoinMC( $aConditions, Criteria::LEFT_JOIN );
-            $oCriteria->addJoin(AppDelegationPeer::TAS_UID, TaskPeer::TAS_UID, Criteria::LEFT_JOIN);
+            $aConditions = array ();
+            $aConditions[] = array (AppDelegationPeer::TAS_UID,TaskPeer::TAS_UID);
+            $oCriteria->addJoinMC( $aConditions, Criteria::LEFT_JOIN );
             $oCriteria->addJoin(AppEventPeer::APP_UID, ApplicationPeer::APP_UID, Criteria::LEFT_JOIN);
-            $oCriteria->addJoin(AppDelegationPeer::PRO_UID, ProcessPeer::PRO_UID, Criteria::LEFT_JOIN);
+            $aConditions = array ();
+            $aConditions[] = array (AppDelegationPeer::PRO_UID,ProcessPeer::PRO_UID);
+            $oCriteria->addJoinMC( $aConditions, Criteria::LEFT_JOIN );
             $oCriteria->add( AppEventPeer::EVN_UID, '', Criteria::NOT_EQUAL );
             if ($sProcessUid != '') {
                 $oCriteria->add( EventPeer::PRO_UID, $sProcessUid );
diff --git a/workflow/engine/methods/cases/cases_Derivate.php b/workflow/engine/methods/cases/cases_Derivate.php
index c0fe09090..5c313961b 100755
--- a/workflow/engine/methods/cases/cases_Derivate.php
+++ b/workflow/engine/methods/cases/cases_Derivate.php
@@ -123,7 +123,13 @@ try {
     $aCurrentDerivation = array ('APP_UID' => $_SESSION['APPLICATION'],'DEL_INDEX' => $_SESSION['INDEX'],'APP_STATUS' => $sStatus,'TAS_UID' => $_SESSION['TASK'],'ROU_TYPE' => $_POST['form']['ROU_TYPE']
     );
 
-    $arrayDerivationResult = $oDerivation->derivate($aCurrentDerivation, $_POST['form']['TASKS']);
+    $aPInformation = $oDerivation->prepareInformation( array ('USER_UID' => $_SESSION['USER_LOGGED'],'APP_UID' => $_SESSION['APPLICATION'],'DEL_INDEX' => $_SESSION['INDEX']
+            ) );
+
+    //$_POST['form']['TASKS'] is the information after the cases_ScreenDerivation
+    $nextTasks = G::array_merges($aPInformation,$_POST['form']['TASKS']);
+
+    $arrayDerivationResult = $oDerivation->derivate($aCurrentDerivation, $nextTasks);
 
     if (!empty($arrayDerivationResult)) {
         foreach ($_POST['form']['TASKS'] as $key => $value) {