Comment 2 for bug 1911786

Noting that the change made in bug 1803734 did not turn out to be sufficient: old on-order POs that never should have had an EDI ORDERS message sent did get processed by edi_order_pusher.pl for one of our customers that switched to EDI attribute sets.

Setting the importance of this to high; errant EDI messages have the potential to cause financial consequences to the library.