Wow, this would be a huge paradigm shift. I am confused.
Craig, are you saying that the .enc files are not full backups but incremental? By definition, they wouldn't be. With incremental backups, you would have a full backup. Then, each day, the backup would be only the changed files which would be added to the full backup. So, you would only have one backup file in the Backup folder.
But, what happens, though, is AC seems to make a whole new backup each day which includes all of the files both the original ones and the changed ones.
