interesting question. not sure if this is possible.
my separate question is this: i wanted to use two CO gift certificates for two tickets. my bro. and i are going to san fran. but, with CO.O.L you cant use two certificates for one purchase. so, they are in separate records.
but, i don't want to be upgraded if he isn't so i want to combine the records. i assume this can be done. should i call tech support?