Last year I lost my EU passport but later found it. So right now I have two passports in the same name from the same issuing country, just with different passport numbers. I was wondering if I could still use the old "deactivated" one to travel with to certain countries.
I just spent 4 months in Brazil and hence overstayed my visa-free travel by a month. I am not allowed to travel back to Brazil for a year. I was wondering if I could travel back into the country on my old passport without issues? I know that Brazil is one of the countries participating in the Advance Passenger Information System (APIS). If I give this old passport number to the airline before flying in, would this be caught by some system?