I have two vendor invoices - same customer. First is dated 11/28/07, second is dated 12/7/07. Both were entered with terms of "net 60". I checked the old posting journals and they were entered as such. Checked the vendor information, and they are specified with "net 60". I've printed a pre-check register to write checks today. The invoice above, dated 12/7/07 is on the list as due, which it is not, and the invoice dated 11/28/07 is not on the pre-check register (it should not be ).

Any ideas why?