Why is an invoice from yesterday, with net 45 terms, showing past due?

Thanks for laying out the details of your issue, @smorgan01.

I'll be more than happy to help you resolve this issue. Yes, you can edit or delete and recreate the term of your invoice to isolate this. I'll show you how:

1. Go to the Lists menu.
2. Select Customer & Vendor Profile Lists (for Windows), Customer & Vendor Profile (for Mac).
3. Click Terms List.
4. Highlight the terms you want to modify.
5. From the Terms drop-down, select Edit Terms or Delete Terms.
6. To recreate it, select New in the Terms drop-down menu. 

You can also use this link for more details: Set up payment terms.

Once you're all set, you can now seamlessly create your invoice. When your customers pay their bill, you can refer to this link on how to record it in your QBDT: Record an invoice payment.

You'll always have my attention in case you need more assistance with invoices terms. I can also answer any QuickBooks questions you may have. Just leave the details in your reply and I'll take care of it for you. Have a good one!