I have no status with AC, but do have FF # with them. I am 1K with UA. I I have some UA/CO flights coming up in the new year, and already been upgraded and some are pending, however I would like to have them credited to my AC FF # rather than to my mileage +. If I take out my mileage + number and use my AC #, will I loose the upgrades and those that are pending and the e+ seats I now have for those flights? I would assume that my *G would still work for preboarding, lounge access even though it would not be printed on the boarding pass, so guess I would have to show my *G UA card. Answers would be appreciated.