Help! I'm stuck.

I'm used to working with Banking, Write Checks. For refunds, we make a 'customer' out of vendor+refund (say ebayrefund) and in Write Checks, that 'customer' gets the refund line. Then we can do Customer, Enter Sales Receipts to convert the refund into a payment to be deposited, then deposit the payment in Banking, Make Deposits. Works great. 

Recently, the owner switched to using a credit card from the vendor we buy the most parts from, and Write Checks for other stuff. When I had parts refunds - for example if you buy a battery, you get a core charge, which is refunded when you turn in your old battery-I did the same as I had been doing, and put 'xxxrefund' in the customer field to the right. I got my credit in the credit card register but also I got a cash deposit for the credit, because I accidentally filled in the customer field. the light finally dawned and I now know not to fill in that field.

I need to get rid of those cash deposits. I've tried what is in these suggestions. I can follow MaryJoyD's process and delete the payment from the undeposited funds, but when I go to the register under Banking, Make Deposits, it is still there. Help! I have about 30 of these to get rid of. I didn't notice my mistake until I'd done quite a lot of transactions wrong!