Hi Jeff
I have used the Exchange RSG and I do NOT have that key in my registry.
You may have already covered these, but i'm including a few points from the Admin Guide section on the Exchange Agent, just in case ...
■ Mailbox stores in the RSG must come from the same storage group. You cannot add mailbox stores from different storage groups to the RSG at the same time.
■ Public Folder stores are not supported for restore using the RSG.
■ Do not mount mailbox stores in the RSG before the restore. If you do mount the stores before the restore, then you must dismount them and select 'This database can be overwritten by a restore' on the database property page in Exchange System Manager prior to restoring them.
■ On the server that hosts the RSG, there must be a storage group with the same name as the original storage group for the data you are restoring. If no such storage group exists on the server, then you can use that name for the RSG when you create it.
Do any of these help?
Cheers
