Ok this is a bit weird. It looks like Unity did not delete all the users from Exchange when I would delete old users or when I would rename them. So what I am showing is 750 users in Unity and 960 user is Exchange. Is there a way to tell Unity to check Exchange for users that are not in Unity and delete them, or vise versa, have Exchange check Unity and have it delete users it does not find in Unity?
One other question that has been bugging me, is there a way to rename a Unity account or is it just delete and recreate?
Also I am running Unity 4.2(1).