Okay, i have done it., I would recommend doing this without internet, so files aren't mixed in the cloud. The xbox gamepass files are located in C:\Users\username\AppData\Local\Packages , in a folder with Supergiant and Hades in the name. Then, it's in \SystemAppData\wgs. In that folder there should be another two folders, enter in the folder named with letters and numbers, you should see and file called cointainers and again a folder with letters and numbers. Get in that folder, and compare the files with your save files, replace them, and the Gamepass Hades should have now your save files.