Exchange Mailbox Moves - Fail due to AutoReply (2010)

We’re encountering issues with a small percentage of move requests on a mailbox rebalancing project.  There is no upgrade or move between different version of Exchange involved - just going from one mailbox database on one server to another mailbox database on another server – both Exchange 2010 SP3.  

The moves fail almost immediately and the following event is recorded:

Event 8533:
“A problem occurred while getting the properties for the automatic reply message from FirstName LastName.
Error code: -2147221233.

Try to clear the rules or run ISINTEG to check for any problem in the database "Mailbox Database 01".”

We found that the auto-reply integrity was in a failed state in many cases but even after disabling it and checking the status again (reporting clean now), it still fails.

Set-MailboxAutoReplyConfiguration user.name –AutoReplyState Disabled –ExternalMessage $null –InternalMessage $null

Also completed mailbox repair requests successfully but still same mailbox move result.  

New-MailboxRepairRequest -Mailbox user.name -CorruptionType ProvisionedFolder,SearchFolder,FolderView,AggregateCounts

Although it doesn’t appear that corrupted messages are the issue, we also increased bad item limit to a high value with accept data loss.  

New-MoveRequest -Identity user.name -BadItemLimit 500 -AcceptLargeDataLoss

Again, no change.

Any other thoughts?  We are trying to avoid exporting to PST and re-creating mailboxes due to potential undeliverables involving AutoComplete, replies to previous messages, etc.