I moved a mailbox from Exchange 2007 SP3 to 2010 for testing. Now I want to move it back to Exchange 2007. In Exchange 2010 I do not get the options to new local or new remote move. The commandlet new mailbox move isn't working. When I try to make the move using Exchange 2007 I get the error Summary: 1 item(s).0 succeeded, 1 failed. Elapsed time: 00:00:01 Tracy Cleeton Failed Error: Error was found for Tracy Cleeton (tcleeton@sagacom.com) because: Error occurred in the step: Opening source mailbox. Failed to open mailbox with error: An unknown error has occurred., error code: -1056749262 Exchange Management Shell command attempted: 'Saga.dom/Saga/Corporate/Users/Business Users/Tracy cleeton' | move-mailbox -TargetDatabase 'SDCMAIL01\First Storage Group\DB01' Elapsed Time: 00:00:01

Hi, To remove the mailbox from exchange 2010 to exchange 2007, please use EMS: New-MoveRequest -Identity 'tony@alpineskihouse.com' -TargetDatabase DBPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT

What is the format for DB? Do I need to put the server, information store, and database instance? I have tried this command a couple of times using just the name of the DB (DB01), and the request indicates that it was accepted successfully. It then shows up in the management council as pending -- but never actually moves. Tracy

Hi Tracy, The move will be performed in background. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT

Hi Tracy, The move will be performed in background. We cannot move a mailbox if it is still listed under "Move request". You can clear the move request then the 'new local move request' will be available when you right click the mailbox: 1. Open exchange 2010 EMC, expand to Recipient configuration->Move request. Make sure that all move requests are completed. 2. Right click Move request and click “Clear Move request”. Then you will be able to re-move the mailbox. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT