@BigRedConsulting 

"It's a big issue just for the terms? Why not just enter the due date on the Bill instead of using terms?"

Because in the industry I was in (retail), many vendor's invoices don't have a due date - they just have an invoice date and terms.  How would you enter the due date for a vendor bill dated Feb. 5 with terms of Net 75?  Or even Net 60 without using a calendar?  Pretty time-consuming. 

"Do you mean "Enterprise Resource Planning" systems? If so, yea, QuickBooks isn't that!"

Agreed, but calling it QB Desktop "Enterprise" gives the impression that it essentially is.