I bought a ticket yesterday and immediately upgraded it using two RPUs. It now turns out that I may need to cancel the trip. I can cancel the ticket under the 24-hour cancellation policy, but I'm wondering about the RPUs. Do I need to do anything special to get the RPUs back (e.g., calling and getting them taken off before canceling the ticket), or will that happen automatically when I cancel? Any idea how much time it takes for the RPUs to be redeposited?

Thanks in advance for your help.