we moved all of our users from one PO to another, both GW2012SP2. When the users now open their multi user calendar they get the error "d124".

When i open the multi-user list in a users mailbox there are entries from the old po an the new po. I tried to remove the old entries by click the Name, click Remove User, click OK to save. When i re-open the list, the removed users don´t appear. Now i closed the Client, start it again and all of the removed users are shown up again in the multi-user list...

Does anyone have an idea how to remove the user in the multi-user list permamently? Or have any GW Check options to solve this?

kind regards