Maybe it has been covered already but I have not read the whole 156 pages of this thread. So apology in advance.
I just purchased a roundtrip to LHR at united. com and applied SWU (should I call Global Premier Upgrade, I guess?) immediately. "Service Charge" was waived, but I was still asked to pay $61. What is it for? I have never seen this sort of charge PMUA. My upgrade is still wait listed. I assume if it doesn't clear, the fee will be returned?