When you use the Auto Generate Purchase Orders from Sales Orders you select the criteria you want to generate PO's for, then once you click proceed you can view a report before actually generating PO's.  Not sure what that report would be called but, is there a way to edit that report on what fields show up?  Specifically, we have a UDF_RUSHDATE field on the SO Header that we would like purchasing to see on this report.  Purchasing needs to know if an order has a rush date on it because the customer needs to order before a certain date and that would alert purchasing to prioritize those orders.