After some 'experimenting and research' I was able to correctly set up the updated Fragment with the savegame, continue to play and see both endings. Thanks a lot! And thanks for sharing, nice little game.
Unrelated newbie question: How come that sometimes savegames are stored in the game folder and sometimes they're stored in a "Saved Games" directory in Windows' "User" folder? Is that depending on a setting defined by the designer, on the AGS version, on the operating system or something completely different?