I appreciate you joining the thread and following the steps provided by my colleague, @ljordal. Allow me to clarify things for you about the refund in QuickBooks Online (QBO).

Firstly, since you ended up creating two credits for your customer, you should void one of them to ensure your financial records are accurate and tidy.

Regarding the Deposit To drop down, you will need to select which account you want the funds to be deposited into. For more detailed information about refunding a customer, check out this article: Record a customer refund in QBO.

I also recommend consulting your accountant for further assistance with maintaining accurate records. If you don't have one, you can find a professional through the QuickBooks ProAdvisor page.

Additionally, you might want to visit the following article to learn how to add specific details to your sales forms: Customize invoices, estimates, and sales receipts in QBO.

If you require further assistance with managing your refund credits or have any other QuickBooks-related concerns, I am here to help. Please do not hesitate to reach out to the Community. Have a good one.