If you have open orders in the system when you install QAD Warehousing, you can use Wave Planning Orders Initialize (4.15.20.1) to:

Customer schedules can span multiple days. The initialize program updates the order line due dates so that they reflect the date of the last active customer schedule for that order.

Algorithm 1 sorts by-priority-by-order and considers all orders with the highest priority. The initialize program marks all allocated orders and builds an index that points to only lines with general allocations instead of all orders in the system. This increases system performance. You must set Display Only Allocated Lines to Yes in Wave Planning Control to initialize orders.

See Display Only Allocated Lines.