Would saves from the previous version work, just curious cause I don't want to have restart everything
Android I'm guessing? As long as you don't uninstall the game your saves should be fine. Simply download the new APK and install it, it should update the old app with your saves still in place.
If you ever want to make a backup of your saves or move them over to another device, they're located in /Android/data/com.atrx.lostinyou/files/saves.