Hi there, chris280.

Thanks for updating us on what happened after following the steps shared above. Then, this isn't also the kind of impression that I'd like you to have in managing your vendor's transactions. With this, I'll ensure you'll be routed to the right support team to assist you further on this matter.

Based on the screenshots you provided, the way you entered the refund and linked the entries is correct, and no duplicate transactions should exist on your end. As mentioned by my colleague, it is possible that a vendor transaction or refund credit is added from the bank and manually created a new one in QuickBooks, resulting in a duplicate.

Since the issue persists after excluding the entry, I recommend contacting our QuickBooks Support Team. They have the tools to pull up your account in a secure environment which we're unable to do it here in the Community. This way, they'll be able to investigate the cause of the duplicate.

Lastly, you may refer to this article to see details on how you can run a particular report that will reflect all payments made to vendors: Run a report with vendor totals.

Don’t hesitate to click the Reply button below if you have other concerns about double entries. I’ll get back to help and make sure you’re taken care of.