APO Graphical planning board - scheduling of dependent orders

Hi,

I set the "pp planning procedure" 3 (cover dependent requirements immediately) for all the semi-finished products in the product master (APO).

When scheduling pl order of end product in the detailed scheduling planning board the dependent planned orders for all semi-finished products are rescheduled as well only if I schedule the pl order of end product backwards (heuristic or drag&drop).

But if I move the pl order of end product forward all the dependent pl orders of semi-finished products will not be rescheduled accordingly = remain in the same place

Question: What parameters shall I set so the system will reschedule the dependent planned orders if I move the planned order of end product forward?

thanks for all useful hints!!!

best regards,

Pilvi