Originally Posted by
nickerss
What happens to existing bookings in F (booked as F, obviously) that end up as OF which is sold for some amount of time (between now and the date of the flight) as J?
Well, F is no longer a cabin being sold on these flights and the F fare code is zeroed out, and will presumably soon be eliminated from the GDS. Therefore, the airline will be forced to downgrade the pax to CW and pay the necessary compensation as a result. F is no longer a cabin operated by these aircraft (even if the OF cabin is there in the flesh, it is now considered CW).
Also, it is worth nothing that on the above routes (LAS, PHX, CTP, YVR) F is no longer open for bookings.