It may not be an issue, but I updated a users title in AD on Thursday and today (monday) it had not updated in the GAL or in ECP. I updated the users profile information manually in ECP, but I wonder if there is a way to validate what information is syncing from active directory into exchange, and what that interval is.
(i might have just needed to wait longer, but I know the default is 24 hours).
Our exchange 2013 is on premises, but we do have Office365 (just not for mail...yet)