The game now looks for a save file where ever you tell it to look. If you're on PC you can browse to C:\Users\<user name>\AppData\LocalLow\Denki\Autonauts and you'll find all your old saves there. Thanks
and now i finally find my saves! x'D got a bit lazy and started using itch app and it looks for the savegame in "*\AppData\Roaming\itch\apps\Autonauts"
Instead of just clicking once with the mouse you press the button where you want your bridge to start, drag it to where you want it to end, and then release the button.