That's what's happening. The updates are overwriting and my support files ..brushes, actions, workspaces, etc disappeared and aren't even on my C drive any more. I sure as heck wouldn't have removed them so I don't even understand why they are gone. The only abr files I find now are in the program folder and none of them are ones I created or downloaded.
Very uncomfortable program to work in now and whenever I run it it isn't long before my system ...(W8.1 12g ram) totally bogs down and I have to quit LR and PS and re start them to get any sort of performance back. If I try to use tools like the 'adaptive wide angle' ....my whole system freezes up. This type of non-performance certainly isn't what Adobe professes to deliver. When I view online tutorials I always see people blazing through tasks ...usually on a Mac. I have to wonder if CC just isn't Windows 8 friendly.