Thanks for responding. I sent an email to NWA.com asking about Y-ups, including my confirm # and got the standard language on five day processing for upgrades. I called Worldperks again today and was also told by the agent that the upgrades would only be processed at the 5 day window. I asked her to check with a supervisor - she was very helpful - and after checking with her supervisor, I got the upgrade. Y-ups are really common and instantly processed on CO - I am surprised two of the three agents I spoke to were unaware of them here. In any case, I got the upgrade -- but only after multiple calls, emails, much effort and much time spent on hold. I am still not sure why it wasn't processed automatically as it should have. It ended well, but its hard to imagine spending this much effort with every purchased tix.....