When you try to move a mailbox from an earlier version of Exchange server to a Microsoft Exchange Server 2010 server, the operation fails. Additionally, you find the following events are logged on the Exchange Server 2010 server.
Log Name: Application Source: MSExchange Common Event ID: 4999 Task Category: General Level: Error Keywords: Classic Description: Watson report about to be sent for process id: <Process ID>, with parameters: E12,<build type>, <application Version>, msexchangerepl, M.E.Cluster.Replay, M.E.C.A.AmDbOperation..ctor, System.NullReferenceException, <callstackHash>, <assembly Version>.
Log Name: System Source: Service Control Manager Event ID: 7031 Task Category: None Level: Error Keywords: Classic Description: The Microsoft Exchange Replication service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 5000 milliseconds: Restart the service.
This problem occurs because a message in the effected mailbox misses a certain property.
To resolve this problem, install the following update rollup:
982639 Description of Update Rollup 4 for Exchange Server 2010
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.