When I click "upgrade to deluxe" on the in-game store on xbox to upgrade from the standard edition of witch queen it's still charging me the full price, which would effectively mean I'd have to pay £105 total instead of £70 to get Deluxe because I wanted to upgrade later on. Is there not an upgrade option for xbox users like here on steam? https://store.steampowered.com/app/1816020/Destiny_2_The_Witch_Queen_Deluxe_Edition_Upgrade/