AX 4.0 Purchase Order Line "Ordered" quantity is greater than ""Deliver remainder" quantity

We have a purchase order consisting of 1 line item. The line item Deliver remainder quantity = 0 , the Invoice remainder quantity = 0 and the Purchase Order Status = “Invoiced”. However, the Ordered quantity = 80,000.

Initially, the purchase order was created for a quantity of 120,000 and later changed to 200,000 which seems to have something to do with the ordered quantity which remains on this Invoiced purchase order.

Is there any way to cancel the Ordered quantity of 80,000?