Can I swap my iPhone 4 micro sim info onto a iPhone 5 nano sim?

I'm on an o2 contract and I can upgrade, however i'm going away for a bit, but I wanna buy the new iPhone out right before I go (so it will be unlocked - this is because I might need an AT&T sim). Will I be able to go into o2 and just ask for my stuff from my micro (iPhone 4) sim to be swapped onto the nano sim without any trouble?

Nope you can't put your micro sim into the iphone 5 cause you need a nano sim it is required