Originally Posted by
kaka
removing hkg man at T<40min should be fine. Especially if you do it at the gate they will let you know in case ud get an opup. And ud lose the opup if you remove the MPO so in that case they wont let you do it.
You can always remove MPC number after op-up happened. That's why you do it in the lounge next to boarding gate once "boarding soon" appears. Op-ups would have already been finalized and the pax status has already printed at the manifest so you receive appropriate treatment even though you didn't got op-up.