Reversing credit card charges in Retail Pro does not void the original sale. It will run a "Return" on the customer's card and may result in a processing fee in addition to the sale (depending upon the credit card processor being used.)
In order to avoid this processing fee and void the sale, you must void the sale transaction manually. This must be done by an employee with the appropriate rights. The procedure for this will differ, depending upon the credit card software being used. As always, please contact a Big Hairy Dog Tech if you have any questions. 916-368-1070.