The contents of .pst files are not imported into Exchange Server 2007 mailboxes when you use the Import-Mailbox cmdlet

When you migrate mailboxes from an IMAP4/POP3 server to a server that is running Microsoft Exchange Server 2007 Service Pack 1 (SP1), you generate personal folder (.pst) files for the mailboxes. Then, you try to import the .pst files to the Exchange Server 2007 server by using the Import-Mailbox cmdlet. However, the contents of the .pst files are not imported into the Exchange Server 2007 mailboxes.

This problem occurs because some properties of the folders in the .pst files are missing.

To resolve this problem, install Update Rollup 2 for Exchange Server 2007 Service Pack 1.

For more information about Update Rollup 2 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic: For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:

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

For more information about the Import-Mailbox cmdlet, visit the following Microsoft Web sites:For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: For more information about the naming schema for Exchange Server software updates, click the following article number to view the article in the Microsoft Knowledge Base: