Exchange 2010 SP1 Prepare-MoveRequest.Ps1 cross forest migration

Question

We are migrating to Server 20008R2 / Exchange 2010 SP1 (from server 2003, Exchange 2003), and as part of the process, have created a new forest with a different FQDN.

Now we at the end of the migration after finishing with the ADMT tool, and trying to migrate from Exchange 2003 to 2010, and the part of the process is using the Prepare-MoveRequest.Ps1 to merge attributes from source domain to target domain accounts (-UseLocalObject -OverWriteLocalObject switches).

The problem is that Prepare-MoveRequest.Ps1 script copies the source accounts as new ones, instead of merging them, as source and target account have different FQDN.

There is also a message: WARNING: Cannot find corresponding object for XXX (source domain FQDN) in current forest. 'member' not updated.

Any idea how to solve this issue, and merge the source attributes to new one?

Thanks!

Answer 1

As we were under time pressure, we had to erase the accounts, and first re-imported accounts with Prepare-MoveRequest.Ps1, then re-migrated the accounts via ADMT to import SID history.

This eventually worked, but I would appreciate if anyone could advice on this for the future.