I just tried to backup my current version, and I assumed I did because I backed it up. And I tried to install the new version and I did but I didn't know how to get the save files into that version. I just deleted it and then I tried installing the version I backed up, only to find out when I launched the app, I lost all my progress, I had so much progress and I am very upset because I spent time on this game only for me to lose my progress