Originally Posted by
QRC3288
It happens to me in the following situations:
1.) When flying multiple sectors in rapid succession, and/or mixing the KA/CX fare codes.
2.) Changed itineraries - aka, originally booked on (x) date and moved to (x+1) date.
3.) Upgrade-with-miles tickets.
4.) "M" is printed on your boarding pass.
I think this only really becomes an issue when you fly your pants off, or if you're constantly using miles to upgrade.
I do fly a lot with short, but multiple sectors. More than often than not, when I get to the airport check-in counter they usually tell me, so-and-so flight is next to take off and that I've been changed to that flight.
Otherwise I rarely upgrade with AM and the times I have, the flights credited (sometimes only the upgrades sectors were credited—go figure).
And I've never seen the 'M' or 'V' you're referring to, but probably haven't been a MPC member long enough.