Phantom Assembly Planning for Project (PIR)

Hi All

I am trying to run phantom assembly planning (by WBS) through PIR. What I'm hoping to achieve is - the planned orders for the phantom assembly components will be account assigned to the WBS.

I've maintained PIR for the Phantom Assembly through MD61 with account assignment of Q, to my WBS.

When I run MRP - the components of the Phantom Assembly are exploded, but the Planned Order for the components are non-account assigned.

Is there any possibility for the Planned Orders to be account assigned to the WBS?

Thanks

Jiin