We are in the midst of doing preseason orders, where for a time we get a certain % off all items from select vendors. We would like these prices reflected on the associated Item Receipts. We could maybe using Pricing Schedules, and turn them on and off for this time period, but accounting is concerned that if they edit the PO after the schedule is turned off, then that will reset  all the rates on all the items. Is there any other way to apply a % discount accross all Items on a particular Purchase Order?