ix4lq40x99gd I've moved your post to the Mods forum since your main question is about an issue that disappears without mods or cc present. But for the zone objects, that sounds like a OneDrive notification: your cloud storage is full, or close, and OneDrive wants to delete what it thinks are excess files.
The problem is that these files might not be redundant—they're part of the save itself, which gets unzipped into these and many other files while you're playing it. If the files are old, they can be deleted. But if they're from your current play session, and you remove them, you've corrupted your save, or rather your save will be missing crucial data when you go to save your progress, and saving means that data is gone for good.
So please either get rid of OneDrive or stop it from syncing your Sims 4 data. Your various options are covered in this guide:
