As a suggestion, something I started doing several versions back was to keep a list of all the keyboard shortcuts I change. It takes some effort at first, but it does pay off. As mentioned by birdy, commands can change from version to version and in the past I’ve had problems from importing old prefs and things into new versions. So now, whenever I change a keyboard shortcut I just add it into my spreadsheet list… yeah, it takes a few seconds more, but at least I have it documented, so that when a new version comes out I can just run through the list and update my shortcuts – it takes half an hour or so, but at least it’s clean.
All in all, it would be good if Maxon could implement some kind of preferences import, but I doubt that will ever happen.