I just started an Exchange 2007 to 2010 Migration. We are going to go the route of coexisting using the legacy namespaces until we are completed.
Up to this point I have not migrated any mailboxes off the 2007. We have many Shared Mailboxes (still on 2007), and for some reason many of the shared mailboxes are now disconnected.
How do I reconnect these mailboxes?