After awhile when I type rank, the kills, deaths, and ratio are all reset to zero. Anyone know why this is happening and how I can stop it? I'd like to see a progress of my kd ration over time.

This is happening because we want it to happen and you can't stop it.

And if you want to see a progress of your kd ration over time, just open up the menu in Metal Gear Solid and check how many you had to use.

the best way to keep track of kills is to write them all down by hand. I have found creating a tally chart or graph helps.

For real they reset every 2 or 3 days so keep active and it wont happen.

hahaha