diff --git a/src/Bundle/ChillPersonBundle/Controller/AccompanyingPeriodWorkDuplicateController.php b/src/Bundle/ChillPersonBundle/Controller/AccompanyingPeriodWorkDuplicateController.php
index 8cece72c2..e1ff84db2 100644
--- a/src/Bundle/ChillPersonBundle/Controller/AccompanyingPeriodWorkDuplicateController.php
+++ b/src/Bundle/ChillPersonBundle/Controller/AccompanyingPeriodWorkDuplicateController.php
@@ -45,7 +45,6 @@ class AccompanyingPeriodWorkDuplicateController extends AbstractController
         $form->handleRequest($request);
 
         if ($form->isSubmitted() && $form->isValid()) {
-            dump($form->get('acpw')->getData());
             $acpw2 = $this->accompanyingPeriodWorkRepository->find($form->get('acpw')->getData());
 
             $direction = $form->get('direction')->getData();
diff --git a/src/Bundle/ChillPersonBundle/Service/AccompanyingPeriodWork/AccompanyingPeriodWorkMergeService.php b/src/Bundle/ChillPersonBundle/Service/AccompanyingPeriodWork/AccompanyingPeriodWorkMergeService.php
index 2a146b559..b19b8012e 100644
--- a/src/Bundle/ChillPersonBundle/Service/AccompanyingPeriodWork/AccompanyingPeriodWorkMergeService.php
+++ b/src/Bundle/ChillPersonBundle/Service/AccompanyingPeriodWork/AccompanyingPeriodWorkMergeService.php
@@ -173,10 +173,21 @@ class AccompanyingPeriodWorkMergeService
                     ];
                 } elseif (8 === $assoc['type'] && isset($assoc['joinTable'])) {
                     if ($assoc['isOwningSide']) {
+                        dump($assoc);
                         $joinTable = $assoc['joinTable']['name'];
                         $joinColumn = $assoc['joinTable']['joinColumns'][0]['name'];
+                        $relationColumn = $assoc['joinTable']['inverseJoinColumns'][0]['name'];
                         $queries[] = [
-                            'sql' => "UPDATE {$joinTable} SET {$joinColumn} = :toKeep WHERE {$joinColumn} = :toDelete AND NOT EXISTS (SELECT 1 FROM {$joinTable} WHERE {$joinColumn} = :toKeep)",
+                            'sql' => "
+                            UPDATE {$joinTable} SET {$joinColumn} = :toKeep
+                              WHERE {$joinColumn} = :toDelete
+                              AND NOT EXISTS (
+                                  SELECT 1
+                                  FROM {$joinTable} AS t2
+                                  WHERE t2.{$joinColumn} = :toKeep
+                                  AND t2.{$relationColumn} = {$joinTable}.{$relationColumn}
+                              )
+                            ",
                             'params' => ['toDelete' => $toDelete->getId(), 'toKeep' => $toKeep->getId()],
                         ];