I can help you link the deposit to the credit memo, BrettA.

Make sure to select Accounts Payable as the category of the deposit. Doing this will help link the transaction to the credit. 

Check out this link again: Record a vendor refund in QuickBooks Desktop. Then, follow Scenario 2 for instructions and detailed steps.

I'm also adding this article to manage and balance your transactions: Reconcile an account in QuickBooks Desktop.

Keep me posted if you have follow-up questions about linking the deposit to the credit. I'll be right here to provide the information that you need.