Refunding an order is a 2-step process. You must first refund the desired amount. After the refund, the account will then have an open balance equal to the amount your refunded. You must then discount the order by the amount refunded to bring the balance to zero.
Step One: Process Refund
Select Manage Orders from the Orders drop-down
Enter your search term in the search box (i.e. Account Name or order number) and click Search
Click Manage to view and manage the order
In the Payment History section, click Refund Options
Enter the amount you want to refund and click Submit
*Transaction fees cannot be refunded.
Step Two: Discount the Balance
The account will now have an open balance, click Edit
Click the +Fee/Discount button
Enter a description of the discount, making sure that Give Discount is selected, and enter the amount of the discount
Click Submit to process the discount and the balance should now be $0.00