We are not using the Sales Order Fulfillment Worksheet.  We "Create an Invoice" directly from the Sales Order.  When the Invoice is only for a partial fulfillment of the Sales Order, it no longer shows up on the Open Sales Orders by Customer report, even though the Sales Order is NOT closed.  I have to go to the Sales Order, make a minor change, save it, and then it shows up on the report again (as described by others in this blog).  Is there a resolution for this issue?