How do I find a manual check that I entered to edit it

Welcome to the Community, bstoy-pspmetrics.

Let me help in finding that manual check in QuickBooks Online.

There are different ways to find that manual check. If you're not sure or forgot what's that check for, you can use the Audit log to look for that check.

Like this:

1. Sign in to your QuickBooks Online account.
2. Go to the Gear icon.
   
3. Choose Audit log.

This will show you all user activities including the manually added check. Here's an article to learn more about Audit log: Use the audit log in QuickBooks Online.

Otherwise, if that check is for a vendor, you may also use the Expenses window and then filter the transactions so it only shows checks.

Check out this link with a video tutorial in navigating QuickBooks Online.

Keep us posted for other concerns of any follow up questions about checks. I'll be around if you need me. Have a great day!