Open Order Quantity Problem

Hi Experts!

On our open order report, it shows that there is a quantity discrepancy. The third-party order had a quantity of 2 and it was fully delivered and invoiced/billed, and completed; however it still shows up with an error open order quantity of 2. I checked the order and it showed that the schedule line had been deleted, which had the delivered quantity as 2, and now it has none. Any suggestions on how to resolve this issue on the open order report? Thank you for your time in advance!

Best Regards,

WC