Hello there, cmacconsulting.

I see you've spent time and effort remapping the new NEC 1099s.

Since the issue is only happening to one of your clients, we can run the Verify and Rebuild Data within the company file to see if this is a specific issue to that file. This also provides information on how we can fix other problems in QBDT.

1. Go to the File menu.
2. Select Utilities.
3. Click Verify Data. Then, select OK to close all windows.
4. Then, go back to the File menu.
5. Select Rebuild Data under Utilities.
6. QuickBooks will ask you to make a backup before rebuilding your company file, select OK.
7. Once the rebuild is done, click OK.
   

If the same thing happens, I'd still suggest contacting our Customer Care team. They'll be able to pull up the account in a secure environment and conduct further research on this. Here's how:

1. In your top menu bar, go to Help, then QuickBooks Desktop Help.
2. Click Contact Us.
3. Enter your concern, then hit Continue.
4. Choose to Get a callback.

Also, we can check our support hours availability in this article: Contact QuickBooks Desktop support.

To gather more details about filing and printing forms, we can visit these articles:

• Create and file 1099s with QuickBooks Desktop.
• Print your 1099 and 1096 forms.

Feel free to comment below if you have any concerns with mapping accounts and with your 1099's forms. I'm here to help.