San Myshuno apartments keep disappearing

Update: Now the bottom shells of the San Myshuno is disappearing, too. No floating apartment at all, just a patch of unusable grass. I can't figure out what's happening. I'm opening old files and it's the same thing. I didn't bulldoze anything. I just opened the save and my sim is standing outside where her building stood. I remember something similar happening with terrain and terrain paint in another save a couple of months back. I had to download from the gallery several times for terrain paint to stick. Any help would be appreciated. At least to point me in a direction because I am completely lost.

@eternallycharmed Do you have mods or CC? If so, have you tested without any at all?

Hi Luthienrising! Yes. I took out all my mods. I tested without the script ones, then without the others, then without CC. Always deleting the cache and regular things. I tried rolling back to saves from before I updated the game. No matter what I do, it goes back to what it was. The only thing I have noticed is a new build on a shell in chic street (the little one) That one stayed and could be reopened. But the one with all the apartment troubles on chic street and the lively neighbors one disappeared, as well as culpepper and jasmine suites. The penthouse completely disappears (not the shell) as well, but the arts center remains but reverts to the one that comes with the game, not the one I built. I bulldozed it a while ago. There shouldn't be anything there. I put in my own arts center from my gallery to test and now AN arts center appears. The basic one. Not mine. Not a blank stretch of grass. Weird, huh? The shells seem to be okay now, but the builds themselves are gone.

I reinstalled Windows 11. Reinstalled the drivers of my graphics card and reinstalled the sims game and every single pack. I painstakingly updated all my mods over the better part of a week. I have a billion. I've tested with and without. Right now. I have the game open once again, cleared cache (spotlight, local, cache, and online), no mods or tray, new Sims folder (reset),

I would expect it to at least keep the build shape if the apartment reset for some reason, (the walls and such) but it looks exactly the way it did before. Every one of my saves can't possibly be corrupted, can they? I've tested on over 20 pre and post patch. 

One more thing I've noticed: I am working on a save where I had emptied (not bulldozed) most San Myshuno apartments except for a few (mainly the TLC ones for my storyline). When the files revert, they revert to the blank lot I had emptied before I started building up San Myshuno. You can still see the paint on the walls and no flooring. The one that I built over the TLC one goes back to the apartment I left untouched, furniture and all, even though I later emptied it and then built on it. When I open the game in world map view, it shows the new build. I open it, and it's the one that was there before. The TLC apartment complete. Culpepper, I had forgotten to close the wall up when I emptied the one with the balcony. It reverts back to having no wall. Also in Culpepper (the one with the ghost) goes back to the empty apartment (painted walls, no flooring, no interior walls), AND not the one that comes with the game either. Penthouse disappears as well as builds in spice district and fashion district at ground level when I try to go into them. They go back to being blank. Penthouse is left with elevator and post/trash required things only.

Help?

You know what? I think I did bulldoze before I read about the glitches with the shells. I know I manually deleted most of them, but I must have bulldozed a few and not remembered. Is there any fix for that?