I recently created a new mailbox for one of my users, who had a corrupt calendar. I created a new user account and associated the new mailbox with that account. I then exported the email from their old mailbox and imported it into their new mailbox. I then exported their old calendar to a PST and attached it to the new maibox in Outlook. This all seemed to work fine but I have noticed that the new mailbox I created appears in the disconnected mailbox folder on the Exchange Management Console, but if I view the mailbox properities in the mailbox folder under recipient configuration I can still see the new user account associated with the new mailbox. The user appears to still be able to connect to their mailbox without a problem. I manually added the users original email address to the list of smtp email addresses associated with their new mailbox, so that mail coming in from outside goes to the new mailbox.
Not sure why the new mailbox is showing up in disconnected users... any help appreciated. Thanks.