I recreated what I had done two months ago using a new installation of Wake of the Ravager:
1. Install Dark Sun 2: Wake of the Ravager into a folder called Ravager (can probably be changed to something else)
2. Create a folder inside Ravager called DSUN
3. Copy the files from inside the cloud_saves folder in your installation of Shattered Lands to the new Ravager\DSUN folder
4. Open the file dosbox_darksun2_single.conf in a text editor, near the bottom of the file change ravager to chartran, and save
5. Launch the game, press the 1 button (which now starts up chartran rather than the game), and once in chartran change the folder location for the transfer destination by pressing the 2 button, then pressing the C button, followed by typing C:\ and pressing enter (twice)
6. Choose which Shattered Lands save game you want to copy your characters from (i.e. the latest one, after beating the game)
7. Open the file dosbox_darksun2_single.conf in a text editor, near the bottom of the file change chartran back to ravager, and save
8. Launch the game
9. In the main menu, select create character
10. Right-click on any open character slot, select add character, and you should now be able to choose one of the characters from your Shattered Lands save
Also note that left-shift skips the opening videos.