As many of you know, I will no longer be SE as of February 28. I was considering a YYC-HNL run on Dec 30th to attend a NYE party (and get my 3 needed AC segments for E35k) but I decided I was too busy and if I want lounge access I can just buy UA/US Club membership. Anyway, the point is, I have 110 eUpgrade credits sitting around expring Feb 28 and I still do a fair bit of TB flying where I still quite like AC. In 2011 when I was an AC*SE/CO*S, I used to wait until I got my UA/CO UDU and then swap my FF# to AC so I could earn on AC. This year I'd like to do the opposite and get my AC upgrades and then swap my FF# to UA/US. Does anyone have any experience with this? Thanks.