XBOX PC - Cloud Gaming and installed game not synched (Snowrunner)

Thank you, good explanation.

You would have to start over. When you play through the cloud, you're playing the console version of a game. That game doesn't support cross saves, so the console save is not accessible through the PC version of the game.

You say the account from your son is synched perfect. Could it be, that your missing game synch was not on your account? If you played with your account online and had the saves in the cloud this always would synch with a new install of any game.

There is no way to transfer games from the console to the pc. You have to download them through the windows store or the xbox app. If you have your savegames in the cloud and start the game on the pc they should synch with you cloud savegame as long as
you use the same account.

Yes. Since the game is a Play Anywhere title, your save is stored on the cloud and will synch up when you start the game on PC.