Thank you for joining the thread, @ardavis.

Let me help and provide information about the update or correcting the 1099 in QuickBooks Online (QBO).  

Currently, we don't have steps for correcting the 1099 filed through QBO. If you've already filed your forms, you can submit amended 1099 forms through QBO. However, as of this moment, we don't have specific instructions to do so. I recommend checking this article to verify from time to time if the accurate steps have been published: Correct or change 1099s in QuickBooks.

Once the instructions are provided, you can refer to the steps above given by my colleague Carneil_C to ensure the correct box is selected.

For future reference, you can check this article to guide you on how to fix and resubmit 1099-NEC or 1099-MISC forms rejected by the IRS: Fix rejected 1099 forms.

I'll always be here, ready to back you up if you have any further questions about 1099 or other QBO-related concerns. Please let us know any time in the thread. Keep safe!