[ARCHIVED] Orange/Green Exclamation signs over lots / Houses disappear

Hello. I have attached a snapshot of the error code that I received this morning when one of my Sim Families tried to visit another Sim's house in Sulani. When I looked at the Willow Creek manage worlds screen, everything looked fine. I went back to open the household that I was trying to visit and everything worked fine. However, the family that was supposed to travel there was actually there. Then when I tried to play that family, the same error code appeared and I went back to the Willow Creek manage world screen and the orange exclamation mark triangle appeared over the Willow Creek Archives Community Lot. I then exited the game, reloaded the previous save and went into build mode for the Willow Creek Archive and a message appeared that said one or more EA items were not found. I then redownloaded the Willow Creek Archive from the Gallery and all items were present. I then went back to manage worlds and deleted a game build lot in Glimmerbrook and one in Moonwood Mill and went back into build mode in the Willow Creek Archive and everything was there. This is the same routine that I follow each time something weird happens in game and I see the orange exclamation mark triangles above any of the Willow Creek Community Lots. The triangles always start in the archive and work their way to the other community lots and then to one of my builds in Willow Creek. The only way that I can get the orange triangles to disappear it to start deleting other pre-made builds that come with the game so that I don't have to delete any of my builds. I have gone into build mode to check the Willow Creek Archive and although no orange triangle appears over the lot, the info panel shows that items within the building have disappeared. I then go back and delete a random game build or enough game buildings and the items reappear or the orange triangle(s) disappear and I can then start playing and saving the game as normal. I have had this problem since the January 16 update. I downloaded the For Rent pack in December and this never was a problem until the January 16 game patch. I actually only have one house in the entire game that I have added one rental room so basically, I am not using any of the For Rent features. Also, if I did a test and if I downloaded a large build of around 900KB, all the Willow Creek community lots would contain orange triangles including one of my builds in Willow Creek. However, after the latest March 6 update, I could actually go into build mode and the builds were in tact and further investigating showed that my Sims could travel there and everything was normal although the orange triangles appeared above the lots in the manage worlds screen. Prior to March 6, this would not be possible because the lot completely disappeared. I went back and removed the house I downloaded for the test and all of the orange triangles disappeared as I expected. If I downloaded a house or around 400KB, no orange triangles would apprear. Also, over the weekend, I changed all of the outfits in 2 households in Sulani and made a small rennovation to a small build and no orange triangles. However, if I change enough outfits, especially with Sims that are in larger houses, the orange triangles will appear and stay until I delete one or more lots elsewhere. This is how I have had to play the game since January 16 so that I avoid the corrupted save issue by always going to the manage worlds screen and checking for orange triangles in Willow Creek before saving. If I save with the orange triangles, most of the time it is too late except that after the March 6 update, I actually think I loaded a save with orange triangles and when I deleted enough builds, the orange triangles actually disappeared. I have spent hours testing this with and without Mods and the results are the same. I also tried leaving the game running all day while I was at work and when I came back home and checked, everything was fine except, the orange triangles started reappearing on the archive in Willow Creek. It seems as if the game itself has reached some type of memory limit and it will start deleting items in the Willow Creek Community lots one by one until the lot itself no longer exists as you add more data to the game unless you remove data from somewhere else. However, I have played Sims 4 for well over 12,000 hours in the past 3 years and never saw anything like this until after the January 16 update although I read where other players have seen this well before that. I now have deleted most of the premade residential lots that came with the game packs and will soon have to start deleting community lots if this problem persists in order to keep playing. I have all of the packs, kits, including the most recent Crystal Creation kit, or anything else that has been sold for the game. Is there an unknown memory limit to the game that would cause this? I have a gaming desktop that a 64 GB RAM, 13 gen Intel I9 13900K 3.00hz processor and a Nvidia 4090 graphics card and I have no other issues with any other games that consume alot more system resources so my only thought at this point is that something happened to the sims 4 during the January 16 game patch. Sorry for the long explanation but I want you to have as much info as possible.