The relocation kit takes the necessary components with it so the fork lock is disabled.
I didn't care because, imho, if they want my Rocket, it would be easy to break the fork lock with a forceful twist of the handlebars. I think it provides only a false sense of security. Again, that's just my 2c.
If you can obtain someone's broken switch, you could install it to function as a fork lock only and end up carrying a second key.
This is what Triumph gave me, 2005 bike with over 40000miles on it.
Easy job to replace as my stock intake system is in boxes. They call me one key Dave