You could delete the cellscache of that specific save file and that will trigger the game to respawn all areas as if they are brand new. C:\Users\Your user name folder\AppData\LocalLow\Unknown Worlds\Subnautica\Subnautica\SavedGames (i have the first game installed but is the same for this too,just Subnautica:Below Zero) Hope this helps 🙂😉
