Exchange 2010 to 2007 Migration

Hi all,

Due to a geographical move, I am in the process of migrating a number of users from Exchange 2010 to Exchange 2007.

the move was done as an exchange org admin from the Exchange 2010 Server GUI (not Exchange Management Shell)

When i did the move, it seems to have worked, but the move request Status was : Completed with Warnings.

 the details tab shows;

Warning: Failed to reset the target mailbox after the move.
Error details: Not connected.

the detailed log shows this at the end;

06/01/2015 15:41:21 [XXXXX] Failed to reset the target mailbox after the move. Attempt 6/6.
Error details: NotConnectedPermanentException Not connected.
   at Microsoft.Exchange.MailboxReplicationService.LocalMailbox.VerifyMailboxExists()
   at Microsoft.Exchange.MailboxReplicationService.LocalMailbox.Microsoft.Exchange.MailboxReplicationService.IMailbox.SetInTransitStatus(InTransitStatus status, Boolean& onlineMoveSupported)
   at Microsoft.Exchange.MailboxReplicationService.MailboxWrapper.<>c__DisplayClass20.<Microsoft.Exchange.MailboxReplicationService.IMailbox.SetInTransitStatus>b__1f()
   at Microsoft.Exchange.MailboxReplicationService.ExecutionContext.Execute(GenericCallDelegate operation)
   at Microsoft.Exchange.MailboxReplicationService.MailboxWrapper.Microsoft.Exchange.MailboxReplicationService.IMailbox.SetInTransitStatus(InTransitStatus status, Boolean& onlineMoveSupported)
   at Microsoft.Exchange.MailboxReplicationService.MoveBaseJob.SetDestinationInTransitStatus(MailboxMover mbxCtx)
   at Microsoft.Exchange.MailboxReplicationService.MoveBaseJob.<>c__DisplayClass65.<PostMoveCleanupTargetMailbox>b__63()
   at Microsoft.Exchange.MailboxReplicationService.CommonUtils.CatchKnownExceptions(GenericCallDelegate del, FailureDelegate failureDelegate)
06/01/2015 15:41:22 [XXXXX] Request is complete.

Before i continue with the user migration i need to know why i am getting these errors and what it means. what type of issues could it cause in the future.

there is a technet article (below) that comments on moves from 2010 to 2007.

http://technet.microsoft.com/en-us/library/dd638124(v=exchg.141).aspx

I am not using single item recovery, however i did NOT purge the recoverable items folder.

any help would be appreciated.

thanks