So are you required to have all the data that's ever been on your device at the time that you cross an international border? Are you required to copy passwords that were never in 1password onto your device before you travel?

EDIT: Another way to put this: Is there an expectation that a border agent could, for example, ask for the password to my bank account? If not, how would there be an expectation that if that used to be on my iPhone it should still be there when I travel?