Originally Posted by
ManSeekingMiles
I've been combing the magical interwebs and can't seem to find a clear answer on this. Has anyone figured out what happens if you book a flight (or hotel/car) with miles and more miles and then cancel, through the travel center, after they would have otherwise expired? Do they redeposit in your account? Do they go to the great expired miles place in the sky? If they do return, is the calendar reset?
Better to look or ask on the M & M forum
http://www.flyertalk.com/forum/lufth...iles-more-495/ LH M&M miles have a 3 year
hard expiry according to the wiki
I do not know the answer for M & M, but typically a booking/reservation followed by cancellation does not reset expiration. It if did it would be too easy to keep miles from expiry.