Problem

Sometimes when performing Remote Move mailboxes from Exchange 2007 to Office 365 (using Exchange 2013 Hybrid server as proxy) you may face following error:

Error: MigrationMRSPermanentException: Error: MapiExceptionAmbiguousAlias: Unable to synchronize manifest. ‎(hr=0x80004005, ec=2202)‎ Diagnostic context: ...... Lid: 52176 ClientVersion: 15.0.1104.8 Lid: 50032 ServerVersion: 8.3.389.2 Lid: 23226 --- ROP Parse Start --- Lid: 27962 ROP: ropOpenFolder [2] Lid: 27962 ROP: ropIncrCfg [112] Lid: 27962 ROP: ropUpldStStrmBegin [117] Lid: 27962 ROP: ropUpldStStrmEnd [119] Lid: 27962 ROP: ropUpldStStrmBegin [117] Lid: 27962 ROP: ropUpldStStrmEnd [119] Lid: 27962  ROP: ropUpldStStrmBegin [117] Lid: 27962 ROP: ropUpldStStrmEnd [119] Lid: 27962 ROP: ropUpldStStrmBegin [117] Lid: 27962 ROP: ropUpldStStrmEnd  [119] Lid: 27962 ROP: ropFXSrcGetBufferEx [156] Lid: 17082 ROP Error: 0x89A Lid: 23137 Lid: 21921 StoreEc: 0x89A Lid: 27962 ROP:  ropExtendedError [250] Lid: 1494 ---- Remote Context Beg ---- 

Move request for the mailbox is failing and if you restart the move, same error appears again.
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