GSO-PHX and back... Mrs. GSO is Silver, Confirmed upgrades at booking (B fares), and the strange thing is that on the outbound, they deducted 1 for GSO-CLT and 3 for CLT-PHX. On the return, 4 for PHX-CLT and 1 for CLT-GSO. We checked in at the counter both times. Explain that one ( other than the obvious... Agent in CLT was being nice)