Hi Doug, thanks for your reply!
Thanks for the tip - I thought I had tried it before and it didn't work, but I tried dragging the ellipses again and was able to successfully rearrange tile groups, thanks to you! Thanks for the help with this!
Hopefully they work screen brightness back into the action center, because right now, it's too hard to access this on touch devices like our Surface Pro 3.
As for the version, I'm running Build 9926. I'm on the fast track for updates and there aren't currently any updates available. Not sure why this rogue folder is appearing under Quick Access, and why it won't open, delete or unpin from Quick Access...