It was a 3 player vs 3 AI game, when we went to load the game after a break, all the save files were missing complete data, it was different depending on which player loaded the mission. the mission loader had most of their planets, but the other players didn't have any planets but their home planet (even though prior to the save, they had 5-6 planets each.
Unfortunately a hothix screwed with the savegame files, but if you change front_end.enable_strict_saved_game_filtering": false here: %localappdata%\sins2\settings\settings.json, you should be able to load them back in.
Also, you can just find the savegames in the savegame folder where your game is installed, regardless of this.
