Thanks for keeping us updated with the results, scorkwell.

I appreciate you for trying out the steps shared above. I want to make you'll get the solution needed.

Since you've tried the possible solutions above with no avail, I suggest contacting our QuickBooks Care Support. I know that you've already reached us for the same issue. However, our phone support have the tools to conduct a thorough investigation to identify the reason why payment terms are not automatically applying to your invoices.

Here are the steps to contact support:

1. Click Help at the top menu and select QuickBooks Desktop Help.
2. In the Have a Question? window, enter a topic.
3. Click Contact us.
4. Hit the Stat Messaging button.
   

Please take note our operating hours for chat support depends on the version of QuickBooks that you're using. Please see this article for more details: Support hours and types.

Keep me posted for additional questions or other concerns. I'd be more than happy to help. Wishing you the best of luck.