I have a purchased part (created in the part maintenance) defined as "stock item" and I put a lead time of 10 days on the plant field. When I run the global scheduling the system takes the lead time as constraint. Even if the PO is about 20 days the system takes the 10 days (the part setup) to do the schedule. My question is : how should I deal with this kind of logic if I must re-scheduled my jobs with the material's due date constraint? I need to replace quickly 100 jobs with purchase-to-stock material new dates...