Possible to Freeze Prices


There are orders currently entered in JDE. I'm being asked to hold the price for the current orders and new orders get a new price. I'm under the assumption that new/future orders will have overlapping price effective dates so I'm thinking price master may not be much help. Is there a way to hold prices without manually entering the price? I don't have a lot of experience with advanced pricing programs with "Order Level Adjustment" as the adjustment level. Would this be my solution to my problem? There are currently 28 open orders we want to freeze pricing for. I can manually add pricing if needed, but given the amount of orders/parts I'm curious if there was an automated way to do this? I hope my question makes sense. If you need more info please let me know. Thank you.