You don't need to reset the save when moving from 0.7.0 to 0.7.0b2, you can just load the 0.7.0 save on 0.7.0b2
It turns out I just need to install the new version and the old save will remain? So the save is stored outside the game folder?
Верно, просто установи новую версию, сохранение будет.