Next-gen game upgrades never seem to go as flawlessly as you'd hope, so I was not at all surprised to find some potholes to avoid in transferring your GTA 5 save file ... open your menu in GTA ...

Steam players can head over to %localappdata%\Pal\Saved\SaveGames to find their save files. If you’re on Microsoft Store, use %localappdata%\Packages\PocketpairInc ...

which is just because it's a zip archive rather than an image or video. They can ignore the warning.) The save file recipient just has to extract the zipped save game folder into their own Baldur ...