Dear Milk Bike,
If I understood the issue correctly,then it seems you are creating production order manually using
CO01, the BOM is exploded and the items are properly transferred and you are able to see the same in
the component overview in CO03 and the system has created reservations for all the required
components.
Now after running MRP you are unable to see any PR getting generated for the components?
This may occur if sufficient stock already exists for the components or if the MRP type for those
components has been set as ND.
check and come back with your observations.
Regards
Mangalraj.S