I have this strange problem where a single text file (Notes.txt, where I keep random notes) is, as of yesterday, not being backed up by Time Machine. It exists in the many backups that I have dating several months back, but since yesterday, it hasn't changed in Time Machine even though I edit the file almost every hour.
Anyone know what could be causing this? I'm pretty sure that if I deleted the file (after backing it up somewhere else) then moving it back there will probably force Time Machine to back it up again, but I'm really curious as to what is causing this, just in case it happens again. It's a good thing I happnened to notice this, because I needed to look back at a previous version, but now I'm very worried that it might happen to another file that I am never aware is being missed by Time Machine.