Been getting some strange behaviour from my MFT on my NTFS partition, which is C. Not that sure i fully understand the MFT but recently i have noticed when defragging, it seems to move about at will
Normally its sandwiched between other files on the HD but as you can see it has decided to move to the bottom

Yet another time is got way smaller for a couple of days and then decided to get back to normal again. Not sure at all whats going on here so any feedback would be a great help.

The greeny color is the MFT on the screenie.
Thanks