Add the option to do an exchange without needing

Add the option to do an exchange without needing to return and charge again.

It would be really nice if there was a way to exchange so if there was nothing wrong with the product that was returned and they wanted another one in a different size/color that I wouldn't need to do a return and then charge the customer again. I could simply update their original order with the exchange and if there was a difference in price I could charge for that remaining amount or return for the remaining amount.