My remote (grey, with 3 blue buttons)died and I put a new battery in it, but it still won't work on my single door opener nor on the other (double door) garage door. My question is, do the inner codes get erased when the battery dies and need re-programming, or should it work ok when a new battery is put in? My small opener on the single door does not appear to have a smart button. And it still works with one of my other two remotes, with the wall switch and with the keypad. Thanks - please email if you have ideas...thanks!