OK now I can confirm that I do not have to adjust my settings at all. For example when switching from XRT to FBM, my wheel rotation adjusts automatically and stays 1:1. I'm using "Logitech Gaming Software" v9.02.65 .
I haven't looked that much but I don't even know if I can adjust my wheel rotation in LGS itself. My LFS rotation setting is set to 900° and I have never touched it.
Sorry for derailing the topic for a bit
E: Ah I see Flame has already responded. I guess I gave a bit more info though.