@Stardust547 Clearing your caches will do nothing but help; like I said, many of us do this every time we play. Transferring your saves to a new folder will also be fine, but I suggested copying the affected save over rather than simply moving it because your store and/or custom content wouldn't be in the clean folder yet. But it's easy enough to test out the lot, quit without saving, clear your caches again, and then move your other content over as well.
If your active sims live on this lot and you evict them (in order to copy the house, bulldoze the lot, and replace it), the sims will keep their jobs and relationships but lose their promised wishes and opportunities, as long as you do everything in one Edit Town session and don't save the sims themselves and replace them with their bin copies. That's why I suggested it last—some people (like me) would be disappointed to lose those promised wishes. But this process is an excellent way to get rid of corruption, and it won't damage your save.
Of course, if you don't like the results of any of these steps, you can quit without saving. Or you could make copies of your saves now, so that if something goes wrong later, you can revert to the backups. But none of what I described should damage your game in any way, as long as you add or reinstall all of the content that save uses into your clean game folder.