Not a mac user, but I would advise searching system drive
for files with the extension '.kys' to find their location.
Here is where they live in Windows:
The only thing that came up in a search for .kys was Illustrator shortcuts...
Can anybody give some suggestions for a Mac? thanks
Try creating a new shortcut setup, save it with your name
(or something else that is easily searchable),
then use that as the search term to find the location.
If you find the path, please post back.