I came across the below info in the blackberry document:
You can use bulk mode to move all user accounts on a BlackBerry Enterprise Server. During the migration process, you must turn off the BlackBerry Enterprise Server instances in both the source BlackBerry Domain and the destination BlackBerry Domain. In the destination BlackBerry Domain, however, you must turn on the BlackBerry Administration Service.
How should we turn off the blackberry instances? should we do this from the console ?If so how? or if all other BB services on apart BAS on 5.0 must be stopped and all BB services must be stopped on 4.1?
In the below information:
In a Microsoft® Exchange or Novell® GroupWise® messaging environment, you must configure the destination BlackBerry Enterprise Server instances to use the same BlackBerry Enterprise Server instance names (ServerConfig.ServiceName) and SRP IDs that the source BlackBerry Enterprise Server instances use.
Can anyone please let me know how this can be done?