If you are thinking that a save file from the current version 21.2 of Autonauts (or earlier versions) might somehow be used with the next version under development that will be released on Steam later this year (hopefully), please be aware that the next version has so many dramatic differences from the current version that asking Denki to include in the new version some method of converting old version save files to become usable would delay the release of the next version another year.  I don't think anyone wants that to happen.  Instead, we should simply play the next version from its own starting point and enjoy playing it as a new game rather than as an extension of the past game, just as we did when we first started playing that one.