programing mth subway cars to stop at stations

i tryed programing mth subway car to stop at the stations. after i hit the saved button to stop at each station it works fine. but when i shut the power off. and then when turn on the power the trains don’t stop anymore at the station. i tryed changing the battery and charged it up for about 1 hour and reprogramed it again it works fine. as soon as you shut down the power it lost again. maybe i’m doing something worng. can anybody help me. thanks tony