AFC-SplitSecond PSC1 Map Library

Due to the other obvious sabotage on this car, I have a single question. Will a map stay loaded if the unit hasn't been connected to power for a long time, like years ? The cord just happened to be laying in the floor, right beside the unit. Which, how often does that happen ? Even on a non sabotage car. Lol
Yes the map will stay loaded until someone goes in to write a new map onto the ssafc.