Ron,
Borman is right. Once you edit an invoice, the quantities DO get added back to inventory as the program tells you but do not get "re-deducted" after you finish the edited sale. I edited a terms invoice today (in order to add other, different products that we forgot), and the quantity on the product that was on the original unedited invoice does not get taken out of inventory. The products we added to the edited invoice were properly deducted. Normally, we just start another invoice when we need to add products, but sometimes the customer is at the counter and forgets to give us a product. I tested this on a second invoice, and the exact same (and incorrect) results. Can you please fix this bug on the next update since I can see this problem causing alot of inventory discrepancies.