Originally Posted by
Stranger
Back in 1999/2000, my wife got all the Aeroplan miles on a J reward to Europe. Gate agent did not notice this was a reward. Obviously they have since fixed the system and this does not happen anymore.
I think the only way this can happen is if the gate agent rebooks you into a different fare class. For example if your flight is delayed or canceled and they move you to another flight. Normally they'll keep your booking or rebook you into the same fare class but occasionally they rebook you into a new fare class.