Editions?

Hello everyone,

I am a new member on Listal and I was wondering how I can link a special edition of a game that I own to a regular game?

What I mean is, I have www.listal.com/game/kingdom-hearts-birth-sleep-psp-68881

But how can I link it to this?
www.listal.com/game/kingdom-hearts-birth-sleep-psp

Thanks in advance for the reply, love this site so far :)