diff --git a/services/univention-ad-connector/modules/univention/connector/ad/__init__.py b/services/univention-ad-connector/modules/univention/connector/ad/__init__.py
index 61c9fdc4b3..509ca580dc 100644
--- a/services/univention-ad-connector/modules/univention/connector/ad/__init__.py
+++ b/services/univention-ad-connector/modules/univention/connector/ad/__init__.py
@@ -1670,14 +1670,16 @@ class ad(univention.connector.ucs):
 			uniqueMember_del = del_members['user'] + del_members['group'] + del_members['windowscomputer']
 			memberUid_add = []
 			memberUid_del = []
+			trans_add = {}
 			for member in add_members['user']:
 				(_rdn_attribute, uid, _flags) = str2dn(member)[0][0]
 				memberUid_add.append(uid)
 			for member in add_members['unknown'] + add_members['windowscomputer']:  # user or group?
-				ucs_object_attr = self.lo.get(member)
-				uid = ucs_object_attr.get('uid')
+				res = self.lo.search(base=member, scope='base')
+				uid = res[0][1].get('uid')
 				if uid:
 					memberUid_add.append(uid[0].decode('UTF-8'))
+					trans_add[member] = res[0][0]
 			for member in del_members['user']:
 				(_rdn_attribute, uid, _flags) = str2dn(member)[0][0]
 				memberUid_del.append(uid)
@@ -1686,6 +1688,9 @@ class ad(univention.connector.ucs):
 				uid = ucs_object_attr.get('uid')
 				if uid:
 					memberUid_del.append(uid[0])
+			for k, v in trans_add.items():
+				uniqueMember_add.remove(k)
+				uniqueMember_add.append(v)
 			if uniqueMember_del or memberUid_del:
 				ucs_admin_object.fast_member_remove(uniqueMember_del, memberUid_del, ignore_license=True)
 			if uniqueMember_add or memberUid_del: