I know this question may have been answered in a few different ways but want to see if anyone has done this before.
We have recently manually removed all the soft-deleted mailboxes from our Exchange 2010 server. There are still about 600 disconnected mailboxes that are in the databases due to a very long retention time. I know what some may be thinking but for this thread... it is what it is, lol. At any rate... We need to move all of these disconnected mailboxes to a new database in Exchange 2013.
So the plan at the moment is reconnect all of them and do a normal mailbox migration to the new server. Then disconnect them again.
The question in this post: Is there any other way to do it?
I appreciate it!