disneyshopping.com and exchanges -- SR credit?

I did an exchange with disneyshopping. they charged me over the phone, and when I return the swimsuit, they will refund. Does anyone know from experience if an exchange is going to change the SR credit?

Because I'm fairly sure I won't get it back, if they take it away, b/c they created the replacement order on the phone!

Thanks!


(by the way, I wonder not only b/c of selfish want-my-credit reasons, but also I want to know if I need a "buffer" of .88 credits in my account in case they snag it back)