Please use this thread going forward: Save Game Corruption (Disappearing Lots/Error 800 or 801) | EA Forums - 5037272
So I ended up uninstalling and reinstalling the game, testing afterwards with both no mods and mods and the bug is gone (fingers crossed it remains that way). So I'm not sure what really caused it, but I tested it on a new save and an old save that I backed up and after editing a lot and reloading the lot the lot retained all of my edits. It sucks that I had to do all of that because of a bug, but perhaps it could help with your game 🙂
It didn't work for me. I'm so sorry I wish I could play the game properly
EA StaffHello.
For anyone seeing this with an unmodded game, could you share your entire \Documents\Electronic Arts\The Sims 4\ folder?
As mentioned by Crinrict earlier in this thread, this might be related to another issue, which has been difficult for us to figure out. It would be good to share saves before and after the issue occurred, as well as information on what you were doing in the game before the issue occurred.
Instructions on how to share files are here:
[INFORMATION] How to Send User Files to The Sims 4 Team - Answer HQ
I just had this happen.. I was editing a community center lot and selected save and it COMPLETELY reverted the lot back to what it was from the gallery. I spent HOURS modifying this lot and NEVER had this happen before. I am triggered to say the least.
