Then my mistake. I suppose I skimmed over those details. I merely meant that gamepass is the Xbox version, and likewise is linked with Microsoft’s store. It seems like it all goes through the same channels, hence why it recognizes your purchases on the store.

Regardless, the Xbox/MS store version is NOT the steam version. There’s been plenty of topics about this. However, if you want to try, by all means, go for it. Just don’t be surprised if you have to purchase everything over again.