That's how I've changed most of the things in my game, that I personally enjoy having.
There is a 'Merlin' on these forums that taught me some "magic" tricks, actually simple ways to alter the game to my taste, when playing off line. I've taken his advice quite a few steps farther, and now have a game that plays the way I enjoy.
I didn't know of any drop down tabs for ranks, and I have HSFX 6 patched to 4.11.1 also. But my ranks show up as American, and I have only ever played the American campaigns....so I suppose at some time I too, must have changed that properties file. But then again, I've probably changed quite a few of them, and not just the properties files
I just back them up, and if it doesn't work, I paste the old one back.
I even change the faces of the pilots, to friends of mine....
.
Great game, it's 'eternal'....thanks to the guys who do the mods.