Originally Posted by
CPH-Flyer
Is your ticket an award ticket? If yes, then ANA would need to release inventory in I to be able to change the booking.
If it is a cash ticket, you PY leg needs to be in an eligible booking class and you can request a mileage upgrade, online or at the airport.
Whoops, sorry for forgetting that! It's an award ticket. The question is whether they release award seats close to departure. I have heard that JAL does that but never heard anything about ANA.