I have Global Entry via my United States citizenship. During the application, they asked me to declare all foreign citizenships I have and to take those passports with me to the interview (where they were inspected).
I am flying directly from the US to one of my other countries of citizenship (not an eligible country for Global Entry), and will need to check into the airline using my non-US passport (as the country is not visa-free for US nationals). However, this passport was registered as belonging to me during the Global Entry interview.
Does anyone know if the purpose of making me present my other passports was solely for security purposes, or if that also makes them registered and usable for Pre-Check?