I have one Mailbox move request failing. The user was disabled in AD during the initial migration process so I would hazard that something was not done to this user.
Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:01
MapiExceptionLogonFailed: Unable to open message store. (hr=0x80040111, ec=-2147221231)
Lid: 45095 EMSMDB.EcDoRpcExt2 called [length=131]
Lid: 61479 EMSMDB.EcDoRpcExt2 returned [ec=0x0][length=48][latency=0]
Lid: 23226 --- ROP Parse Start ---
Lid: 27962 ROP: ropLogon 
Lid: 17082 ROP Error: 0x80040111
Lid: 21921 StoreEc: 0x80040111
Lid: 31418 --- ROP Parse Done ---
Lid: 21817 ROP Failure: 0x80040111
Lid: 16585 StoreEc: 0x80040111
Lid: 1706 StoreEc: 0x80040111
Lid: 20665 StoreEc: 0x80040111
Lid: 29881 StoreEc: 0x80040111
Exchange Management Shell command attempted:
'Domain.local/Users/User Name' | New-MoveRequest -TargetDatabase 'Mailbox Database 2013052015'
Elapsed Time: 00:00:01
All others seem to be going through fine.