Somewhat related to my previous post re: the .DIR/.MAP "index" files: If
the .DIR/.MAP files are somehow tracking the files in my iFOlder at the
block level, what happens when I defrag a drive that contains my iFolder
files, and the file blocks of my iFolder data changes?

Is there some technical document that lays out the details of how iFolder
does it's syncronization of just the file deltas, and the
relationship/importance of the files in my client home directory
containing the .DIR/.MAP files?