[DataFixtures] [Loader] Pass current connection to associate objects

DataFixtures/Loader/AbstractDataLoader.php

@@ -261,7 +261,7 @@ abstract class AbstractDataLoader extends AbstractDataHandler implements DataLoa
             $middle = new $middleClass();
             $middle->$setter($obj);
             $middle->$relatedSetter($this->object_references[$relatedClass.'_'.$value]);
-            $middle->save();
+            $middle->save($this->con);
         }
     }
 }