Finder keeps losing folders added to sidebar in Big Sur

Hello drpeppertex,

Thanks for getting back to us with those additional details. We understand the concern with your folders in the favorite folder changing on Finder, and we'd be happy to look into this more.

Next let's check this behavior in safe mode:

Start up your Mac in safe mode

What is the exact macOS Big Sur version running on your Mac? Apple > About This Mac.

If it's not macOS 11.2.1, please back up your Mac, and update by following these steps:

Back up your Mac

How to update the software on your Mac

If the behavior persists or you run into any trouble, please reach out again. Cheers!

Hello drpeppertex,

Welcome to Apple Support Communities. It looks like folders you dragged into Favorites in Finder disappear after restarting your Mac. We understand your concern, and we'd be happy to look into this with you.

Are you experiencing the same behavior if you moved your folders to a folder other than "Favorites"?

Does the issue persist in another user account on your Mac? Testing in another user account will isolate this issue further. Here's how to create another user on your Mac:

Set up users, guests, and groups on Mac

Let us know the results. Kind regards.

Hello drpeppertex,

Thanks for following up with us. We understand the importance of having your Mac working as expected, and we'd be happy to get you pointed in the right direction to get some help.

At this point, we'd recommend getting in touch with Apple Support to investigate this issue further. You can contact them using this link:

Get Support

Thank you for using Apple Support Communities. Have a nice day.