METAL GEAR SOLID – Master Collection Version – Game Keeps Deleting Saves on Steam Deck

How to Prevent Deleting Saves on Steam Deck

The Problem

Every time you quit the game, all your VR training disappears and so does my game saves.

The Solution

You have to save and quit the game by pressing the L!+R1 button and then quitting to menu.

For some reason quitting the game from the Steam Deck menu does not save the data and it only saves upon returning to the main menu ingame.