We have a scenario here.
We create the sales order in the sales Plant
We do a STO to Production Plant where explode the BOM which has an configurable sub-assembly
When we run an MRP this creates a another STO for the configurable material to be produced in the supplying plant.
Now, the questions are
1) How do I create the cost estimate for the configurable material
2) How do I get it to reflect in my parent order.