Virtual Machine Migration

Hello,

I would like to change my VM from 2008 R2 to Server 2012 and keep my DNS.

Is there a procedure for that ?

I imagine this procedure :

1. Create a new VM with Server 2012
2. Install our programs on new VM
3. Delete my old VM (without drop the disk)
4. Delete my new VM (without drop the disk)
5. Create again a VM (with same name of my old VM) with disk of my new VM (rattachment)

It's the best way for that ?

Thank for helping me !

Best regards,

Gautier DUMAS