Holy crap, what the hell am I missing? How have I not had to address this previously?
Client just upgraded from 4.40 to v2014. When they enter credit card Sales Orders, they simply just specify the credit card info and that's it; they don't pre-auth or charge the card or anything at that time; that's done at time of S/O Invoicing when they hit the card for the full order/invoice amount. So therefore they're unable to appropriately enter the CVV2 (validation code) during S/O Entry at the same time they enter the credit card info, which means they won't have it during Invoicing. In 4.40 you could enter the CVV2 during S/O Entry even if you're not performing an actual credit card transaction. I know the code can be stored in some other field, but that defeats part of the whole PCI Compliance.