One drive issues, all sims 4 related

I've been having the same issue too, I don't know why this keeps happening with onedrive. It's honestly becoming very annoying. On my last pc, I didn't sign into onedrive at all so I didn't have that issue, unfortunately I spilled water on my pc, completely damaging it and because I didn't back up my sims files to anything, they were just completely gone and I had to start over everything. This time I signed up for one drive because if I had backed up at least my save file then I hopefully wouldn't have had to start over but onedrive doesn't give you enough storage or asks you what you want to save, it just automatically syncs all the files you have on your pc. I ended up having to click free up space on most of the items on my pc because once you run out of space, it stops syncing and won't save any of your new files. The zone objects I believe are all the things you've saved from the gallery into your game library. From my personal experience of having to start over, its better to upload your saved housholds and lots into the public game gallery (all the households and lots I had made saved to tray file and I thought by just saving them to my personal game library they would be saved but they weren't, only the stuff I uploaded to the public game gallery were) and just make sure your game save files are saved on onedrive or a hard drive or some type of cloud storage that won't delete without your permission in case your pc gets damaged or files are accidentally deleted on pc.