I have recently renewed my Indian passport. Now i entered US with my old passport. My question is when i exit US, the airlines sent my details to US CBP so that they have the record of my entry/exit. I believe this is tracked using passport number. Since now i have a new passport with a new number, do i book ticket with my old passport or new passport. How will CBP track my departure if new passport number in used by airlines to book ticket?
THanks, Samrat