This list will start off small and slowly grow bigger as the Mods and I compile the list. No that's not what i meant, i have also tried changing it before. As i said, it has something to do with the api file. Let's say your save file was given the code '5555', if the steam api file doesn't match that code then it will not recognize it as the game's save file. The original api file had matching codes that's why it recognizes the saves.
I guess to bypass steam security they had to tinker with the steamapi code. Maybe to make it look like we're playing space wars? Idk this is what i presume atleast.