As much as I'm loving El Capitan, even though its a beta.. I may need to restore to Yosemite. (Wacom drivers not working yet in el capitan DP2, among other things) If i do a clean install of Yosemite, will I be able to restore the data from my El Capitan time machine? Or will that cause a minor catastrophe? I'm guessing things like Mail might not like going back in time. Otherwise I'll wait it out and cross my fingers for the next DP. Ho hum! .. PS: No need to give me the whole "you shouldn't use betas on an important/production machine!" thing.. I enjoy the experimenting, and the faffing about. I have other machines I can use instead if it comes to it.