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Some source mailboxes are merged into one target mailbox after you use a Move-Mailbox cmdlet to migrate the mailboxes from an Exchange Server 2003 organization to an Exchange Server 2007 organization

Article ID:943479
Last Review:November 27, 2007
Revision:1.4

SYMPTOMS

You use a Move-Mailbox cmdlet to migrate the mailboxes from a Microsoft Exchange Server 2003 organization to a Microsoft Exchange Server 2007 organization. To speed up the migration process, you run a migration script that executes multiple parallel processes with the Move-Mailbox cmdlets on the Exchange servers. However, duplicate aliases exist after the migration process. Additionally, multiple source mailboxes are merged into one target mailbox.

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CAUSE

During the migration process, the script creates the migstubXXXX temporary alias. The temporary alias includes a four-digit number that is generated randomly. When the problem that is described in the "Symptoms" section occurs, multiple source mailboxes share the same alias. This behavior causes one target mailbox to hold the contents of the multiple source mailboxes.

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RESOLUTION

To resolve this problem in Exchange Server 2007 Service Pack 1, install Update Rollup 1 for Exchange Server 2007 Service Pack 1. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
945684 (http://support.microsoft.com/kb/945684/) Description of Update Rollup 1 for Exchange Server 2007 Service Pack 1
To resolve this problem in the release version of Exchange Server 2007, install Update Rollup 6 for Exchange Server 2007.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
942846 (http://support.microsoft.com/kb/942846/) Description of Update Rollup 6 for Exchange Server 2007

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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MORE INFORMATION

For more information about the Move-Mailbox cmdlet, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/aa997599.aspx (http://technet.microsoft.com/en-us/library/aa997599.aspx)

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APPLIES TO
Microsoft Exchange Server 2007 Enterprise Edition
Microsoft Exchange Server 2007 Standard Edition

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Keywords: 
kbexpertiseinter kbqfe kbexchcoexistmigration KB943479

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