MRP Replanning

SUGGESTED

              We are running 6.5 and we are having trouble with replanning rules.   As a simple example we have a firm WO, an SO, and 2 PO’s.   We move the SO date out farther, and we get a suggestion by MRP to move the WO date out, but the raw materials that the WO needs as reflected in the PO’s we are not getting any messages to move them out no matter what we do with the replanning parameters.  Of course we would like to see the message to move them out so that we don’t purchase ahead of when we need the materials.   Our rules are set up for simulation.  Is there something else we need to do to make sure that the replanning explodes down to the materials?