Flight Simulator 2020 - Question?

I bought the Xbox Gamepass (for one month) for one euro a week ago and bought the upgrade to Premium Deluxe for 84 euro today via the game in the Marketplace

Question: Do I have the game with the version now forever or only as long as I have the pass monthly. Pay?

Look what you have in your package for 84 euro. It should show up:
Microsoft Flight Simulator; Flight Simulator Deluxe Upgrade; Digital ownership

Usually the deluxe version costs 89.99 euro