I still have not figured this one out.
Do any of the MaLa elders have some ideas?
Just tested doing this with a hex editor, and it worked just fine. Please back up your entire Mala folder and Mala subfolders so I don't get blamed for any corruption using the hexeditor.

Download a free hex editor. I use this one:
http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htmGo into mala and set up the hotkeys using some other key such as X. In my example, I used the source key as X with the destination key as Z. After setting up the hotkey, quit completely out of Mala.
Run the hex editor and open the file called mala.mle. Search for whatever you called your hotkey. Just after the hotkey, you should see the X and the Z separated by one character. As you can see from the first screen shot below, the hexadecimal value for X is 58. Change this to 09. Save and quit the hex editor.
Now load Mala back up and got to the hotkey options and you'll see TAB where the X was (see second screenshot). I tested this with notepad as my emulator and when I press TAB, Z appeared in notepad.