Key Commands are for some reason stored in the worst place ever. I have been asking cubase to fix this for YEARS.
Take a look at where they store.
The default location to where the key commands are stored when you load cubase, well… is empty. The only way to get the key commands to show up is to place them in this silly folder location
You also have to have the hidden folders button selected in the file explorer so that you can see where to go \
C:\Users\Dallo\AppData\Roaming\Steinberg\Cubase LE AI Elements 11_64\Presets\KeyCommands