I am trying to move some mailboxes from one Exchange 2013 mailbox database to another Exchange 2013 mailbox database. Both mailbox databases are on the same server and there is no DAG.
When I try to move the mailbox, I get the error "The migration batch "1c94......etc" can't be found, and then the migration batch just disappears. (see screenshots below).
When I try to run via Exchange Management Shell, it first shows that it is syncing, but then disappears and does nothing.
Also, if I try to run again with the same batch name, it errors saying batch already exists.
When I run Get-MigrationBatch, it advises that the batch cannot be found.