Re: Strange duplicate files in Sims 3 folder
@HummingBird_005 Yes, OneDrive can really mess things up for Sims 3, and really any game that stores significant data within the Documents directory. Unless people have another reason to use it, disabling it is usually the best option.
I wouldn't think you'd need to redownload your mods or custom content. The files could have been corrupted, which is why you test first, but if they work in the new folder, they don't need to be replaced. For Sims3packs, even if you needed to reinstall them, you could probably find the original downloads in Downloads inside the old Sims 3 folder; those could be copied to Downloads in the new folder and installed through the launcher. But don't do this if you're transferring the .dbc (custom content) and .ebc (store content) files from DCCache, or you'll get duplicates. And when your Sims3Pack content is installed, you can remove the packs from Downloads and store them elsewhere. (It's better to keep them as backups in case you ever need to reinstall.)
I'm glad I could help, and of course if you have another issue, or just more questions, please keep coming back.