diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/GranularImporter.php b/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/GranularImporter.php
index 88b829a8f..70b1e3bb8 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/GranularImporter.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/GranularImporter.php
@@ -163,19 +163,20 @@ class GranularImporter
     /**
      * @param $objectList
      * @param bool|false $generateUid
-     * @return array
+     * @return array|bool
      */
     public function validateImportData($objectList, $generateUid = false)
     {
         try {
-            if($generateUid == null){
+            if($generateUid){
                 foreach ($objectList as $rowObject) {
                     if($rowObject['name'] === 'PROCESSDEFINITION' && $rowObject['value'] == "replace"){
                         return true;
                     }
                 }
+                return false;
             }
-            return false;
+            return true;
         } catch (ExportException $e) {
             return array(
                     'success' => false,
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/ProcessDefinitionMigrator.php b/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/ProcessDefinitionMigrator.php
index a7fb3762c..767497cf4 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/ProcessDefinitionMigrator.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Migrator/ProcessDefinitionMigrator.php
@@ -30,7 +30,7 @@ class ProcessDefinitionMigrator implements Importable, Exportable
             if ($replace) {
                 $this->bpmn->createFromStruct($data, false);
             } else {
-                $this->bpmn->updateFromStruct($data['PRJ_UID'], $data, false);
+                $this->bpmn->updateFromStruct($data['prj_uid'], $data, false);
             }
         } catch (\Exception $e) {
             return $e->getMessage();
diff --git a/workflow/engine/src/ProcessMaker/Importer/Importer.php b/workflow/engine/src/ProcessMaker/Importer/Importer.php
index 969579e41..070d80c96 100755
--- a/workflow/engine/src/ProcessMaker/Importer/Importer.php
+++ b/workflow/engine/src/ProcessMaker/Importer/Importer.php
@@ -216,12 +216,15 @@ abstract class Importer
         if ($objectsToImport !== '') {
             $granularObj = new \ProcessMaker\BusinessModel\Migrator\GranularImporter();
             $objectList = $granularObj->loadObjectsListSelected($this->importData, $objectsToImport);
-            $processGranulate = $granularObj->validateImportData($objectList, $generateUidFromJs);
+            $processGranulate = $granularObj->validateImportData($objectList, $generateUid);
             if (sizeof($objectList) > 0 && $processGranulate) {
                 $granularObj->import($objectList);
                 return $this->importData['tables']['bpmn']["project"][0]["prj_uid"];
             }else{
-                return new \Exception('ERROR MERGE/REPLACE ERROR');
+                throw new \Exception('Select definition of process and replace option',
+                        self::IMPORTED_PROJECT_DOES_NOT_EXISTS
+                );
+                return new \Exception();
             }
 
         }