Bill to and Ship to are not flowing from OM to IB
Scenario:
Item instance inside inventory and owned by Internal Party without a BT and ST.
Create a Depot Repair Service Order with customer A without providing Item instance /serial detail in the header but provide it in the details tab the item instance and serial number which is in inventory and owned by internal party
Save the Service order and there is a message saying SR party is different from IB party/owner. Change it through change owner menu by going to tools.
Go to tools and change owner. This will update the ownership in IB = Customer A and location = sub inventory.