Originally Posted by
slicktony
But does this sound right to people who have had to do this kind of thing before?
For the best part of 20 years, I've been managing travel for someone who is required to travel on two passports on some trips. The first and most important rule is: don't stress. If you remember to change the API to match the passport you will be using for each flight, that's good. If you forget, the airline can do it for you at any time during a check-in process. If you completely forget to do anything and the API remains wrong, on the basis of past (non-)incidents when flying in either direction, I would still place a small bet on nothing adverse happening.