Schedule Agreements with JIT/FRC

We are using schedule agreements with JIT and FRC. When MRP runs it generates the delivery schedule lines with the delivery dates which appear on the JIT/FRC schedule. However, when MRP pulls in the date and suggests a new (earlier date) in MD04 under rescheduling date, the date on the delivery schedule and the JIT schedule do not reflect this rescheduled date. Is there a setting or some configuration I have missed. I need to have the delivery schedule and JIT schedule reflect the rescheduled MRP dates.