Originally Posted by
xyzzy
The QF redemption rates have gone up since the tickets were issued. A change will almost certainly involve a reissue at the new redemption rate.
I actually would think that the OP would be OK as long as the new flight was within the 1 year life of the "certificate" that was issued, which in this case would be through November of this year. Beyond that a new reward would have to be issued, which would then require more miles.
And I doubt that the redeposited reward will go back into reward inventory at this point.