I have about twenty sales orders that suddenly disappeared. Some were invoiced and printed. Others were finished and we were preparing to invoice. However, the sales orders do not show as open. When I pulled a Sales Order Recap, the missing sales orders show as either invoiced or deleted, but there is no invoice history in the A.R. Somehow all the orders on the recap show the same customer sales purchase number and bill to. Nothing shows as back ordered. Any ideas what could have caused this and how to fix it? Thanks.