If you do a paid upgrade at the gate, will it count as a EQM bonus for flying C or F? OR is it treated as an "upgrade instrument" thus only crediting you with EQM/RDM based on original fare purchase?
I have a flight to PEK from SFO in October....I will probably ask if it is available, but whether there is an EQM bonus as if I had originally purchased C would be a factor for me....