Pretty much title. Could be literally anything that I won’t understand until I’m hours into the game. Hints are fine too.

Hello, I recently finished the game, and wanting to do some sidequest and achievements, i went back to a save before the apex. Of course, doing few to none manual save, i'm not just in front of Alex but just before the quest with Mila. I see strange things in my save that shouldn't happen. Sarah and her crew is already in atmosphere crew, same with military bots (who are ko) but if i remeber correctly, the quest with Dahl isn't here already ? Moreover, I see some bugged Apex Tendril who came from nowhere (because the station isnt yet under the Apex attack..)

Do someone know that issue ? Should i just redo a game to try the sidequest ? I must say i may be a little too lazy to redo 15 hours of game just to go back to that point..