This is the dumbest "fix" to the PHI restrictions I've ever heard of! Why not simply remove the patient's name and other demographics from the Last Note Backup rather than encrypting the whole thing? I'll bet that the next time AC loses contact with the databases or crashes/freezes for some other reason, you'll reopen AC only to discover the Last Note Backup menu item grayed out (unavailable). That's what happened to us this evening, and over an hour of work on a complicated patient evaporated!
Honestly, we've been using AC since version 1, and even as it was then, if the app quit, you had your last note backup there in the AC folder.
So this is progress! If I were starting again, I would NOT buy this program.