Linux Mint 14 upgrade to Linux Mint 15

So i am trying to upgrade from Linux Mint 14, to Linux Mint 15, by following these steps.

1.) sudo sed -i 's/quantal/raring/' /etc/apt/sources.list

2.) sudo sed -i 's/nadia/olivia/' /etc/apt/sources.list

3.) sudo apt-get update && sudo apt-get dist-upgrade

4.) sudo apt-get upgrade

5.) sudo shutdown -r now

As for when it asks me if i want new configuration files, i will press Y. I will let you all know how my upgrade process went. Ive never had any luck going from one version of mint to the next, without having to re-format.