edit mailinglists

app/UI/Client/DistributionList/Providers/EditListDataProvider.php

@@ -230,7 +230,7 @@ class EditListDataProvider extends AddListDataProvider
             }
         }
         foreach($this->formData['memberListActually'] as $oldMember) {
-            if((!in_array($oldMember,$this->formData['memberList'])) || (!in_array($oldMember,$customMembers))){
+            if((!in_array($oldMember,$this->formData['memberList'])) && (!in_array($oldMember,$customMembers))){
                 $delMembers[] = $oldMember;
             }
         }