I've been trying macOS High Sierra out, with APFS, & have noticed something disturbing. If the Mac crashes files recently created or downloaded have disappeared. Files recently changed have lost the changes. By recently I don't mean in the few minutes before the crash, but at least as far as 3 hours before the crash. I seriously hope this behaviour is resolved before High Sierra goes to public release.I originally posted this to Apple Support Communities & got an email suggesting I repost here. I wasn't posting chasing solutions, but if anyone has suggestions torwards solutions they're most welcome.