Had to check with our Senior Applications Analyst; express order pulls directly from IC11 if you don't have an IC12 record created, so at least you can narrow it down to that form. He said to check the Accounts, SUOM, and recheck the UOM tab.
Since you mentioned already that you have BX set as the BUOM, I'm going to assume you have a "1" in the Buy column, but if you don't this is a reminder.
