I have a user that moved to a new dept and has a new extension. The old extension is in use by a new employee. Ext. 3101 belongs to the new employee and the micollab client works as expected - chat and phone presence. The user who moved, now has extension 3136 and the micollab client, when opened, will not put the chat bubble up and is unavailable for chat. The phone, whether hotdesked in or not, shows constant green. The interesting part is when 3101 opens micollab, the chat bubble shows up on both users micollab clients and phone presence appears to be tied to that extension. The 3101 extension is part of a ring group of 3 extension for our receptionists and they are non-hotdesk users. The name was changed on the micollab (mas) server for the new employee. The user who moved is a hotdesk, ACD user with a new, AD sync'd user record on the MAS and the phones associated to the user record via MCD. I'm at a loss as to how to get the relocated user's (3136) micollab client to associate with the new extension instead of the previous one (3101).