Can someone please help me clarify if it is possible to use the BES 5.0 transporter tool to migrate users from a BES 4.1.4 domain to a 4.1.5 domain both BB domains are assosiated to the same MS Exchange organisatio? All the RIM documentation out there refers to migrating from 4.1.x to 5.0 only.

Yes it will work. No it isnt supported. It *can* destroy both databases just as an FYI, at least that is the official warning from RIM.

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Thank you for the information. Is 4.1.6 supported? That is, migration from one 4.16 domain to another 4.16 domain? The destroy both databases warning RIM gave, are they referring to its use generally or specifically for 4.1.4 & 4.1.5 migrations?

Anything other than BES 4.1.x to BES 5.0 is not supported. They have tested internally and it works, but if something fails it can screw with both SQL databases.

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Thank you for the definative...........

The problem has to do with user ID numbering. 5.0 added a an extra DB field to handle the referential mapping. If the user id's collide, things break.

Thank you for the information - you mentioned user ID numbering, are you refering to uXX number that the BES assigns to activated uses?

Yes. Looking into the UserConfig table in the database, it will have the standard Id column in both BES 4.x and below and BES 5.x (this is the uXX number you're referencing). However, in BES 5.x, it now also contains a DeviceUserId column, which is used for legacy purposes.

When you run BlackBerry Transporter, if there is a conflict with the UID of the user being migrated and one that already exists on the BES, the DeviceUserId is populated with the UID and mapped to a new Id in the database. With 4.x, since this database extension does not exist, then there could be a potential for conflict. Think about having two separate BlackBerry domains with 15 users and 20 users that were all original load users (so they're using UIDs 1, 2, 3, etc). If you wanted to try and use BlackBerry Transporter to migrate the users, there would be conflicts for the first 15 users.

This is one reason why the database merge tools from RIM were discontinued. As Sith mentioned, it can completely wreck your database.

One thing I haven't tested is using BlackBerry Transporter to consolidate more than two BlackBerry domains, which will be something we'll end up doing (3 domains into one).

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BCSA (4.1, 5.0) | BCSD (4.1, 5.0)

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Otto, thank you for the information. So re-provisioning it is.