Another reason is: I don`t like Microsoft to hide things on my PC. I got about 300 games in my libraries and none had been so stubborn to hide its savegames from me.
I would be more helped with, if you could please tell me the savegamefolder and how the savegame files are named, since Windows and Microsoft are very cryptic about that issue.
Edit:
Astonishing. Just for comparison reasons I checked the savegame folder of Gears 5 from Steam. Foundin within 30 seconds in my steam folder.