Fixes #1891: Reverted array union instead of array_merge to retain keys

include/Webservices/VtigerCRMObjectMeta.php

@@ -396,7 +396,7 @@ class VtigerCRMObjectMeta extends EntityMeta {
 		
 		$heirarchyUsers = get_user_array(false,"ACTIVE",$this->user->id);
 		$groupUsers = vtws_getUsersInTheSameGroup($this->user->id);
-		$this->assignUsers = array_merge($heirarchyUsers, $groupUsers);
+		$this->assignUsers = $heirarchyUsers + $groupUsers;
 		$this->assign = true;
 	}