Hi there @hello23,
Let me clear things up for you.
If you've recorded this transaction in QuickBooks Online, you no longer need to match your downloaded bank transaction to it. As long as it's assigned with the correct bank account, then your bank balance will be correct.
If in case you need to match the downloaded bank transaction to your recorded transaction, you may view this helpful article: Add and match downloaded banking transactions.
Don't hesitate to leave a comment below if you have any other questions.