Originally Posted by
thijsseh
You cannot use miles to upgrade more than one cabin. So Y to F with miles is not possible.
Understood. But if I book Y, upgrade to J using miles, and subsequently F becomes available, can I call in to have them manually modify the reservation from a Y award to an F award, or does it need to go through the redeposit process, and if so how long is the redeposit process?