You can use the BlackBerry® Enterprise Transporter to move one or more user accounts from one BlackBerry Domain to a different BlackBerry Domain. You can use the BlackBerry Enterprise Transporter when your organization upgrades the BlackBerry® Enterprise Server and you want to create a new BlackBerry Domain, or if you need to move user accounts between BlackBerry Domain instances. For example, if you want to upgrade your organization's BlackBerry Enterprise Server from version 4.0 SP7 to version 5.0, you can create a separate BlackBerry Domain version 5.0 and use the BlackBerry Enterprise Transporter to move your organization's user accounts to the new BlackBerry Configuration Database. You can also use the BlackBerry Enterprise Transporter to move user accounts from a production BlackBerry Domain to a test BlackBerry Domain and back.
The destination BlackBerry Enterprise Server resends service books, and the BlackBerry devices can start receiving new messages after the BlackBerry devices receive the service books. Synchronization of organizer data and calendar information over the wireless network might occur after the migration process completes.