Hello David,
How are creating the BPs in CRM? Are the created directly in CRM or replicated from ECC?
The issue is when you recreate the Sales Orgs system generates a new O-#. So the BPs do not have the same sales area exactly. So if they were created in CRM directly, we may have to create them again. If they were replicated, try replicating them again using a REQUEST.
Regards
Prasenjit