i bought the crew 2 on stadia, my question is, is progress on stadia saved somewhere? can I buy the UPLAY version keeping my staff progress?
I am not sure what you mean regarding the Uplay version, but usually games on Stadia are saved automatically unless they have specific possibilities to save the game (e.g. Assassin's Creed, Baldurs Gate 3, etc.), then you can choose specific savegames if you need to reload.