HI Jason:

Most of your wish already exists. When you are entering an AP invoice, blank out the Terms code and you can manually enter whatever Due Date you want. The only thing you can't do is to assign a blank Terms codes to a Vendor. But that's not such a bad thing. What Due Date would be calculated from a blank Terms code? Probably today's date. And if the user forgets to change the date, the invoice would due immediately. At least if you start with a Terms code (ie Net 30), the default date is reasonable.