DHCP database question

Hi Everyone.

We are re-doing all of our DHCP scopes on our DHCP servers. There are
approximately 80 scopes on each server.
The network guys have been creating the scopes as they should be on a
Virtual server (offline)
We will take a backup of these scopes using netsh with the dump command and
we want to restore these to the live server.

What I want to know is how I delete the scopes on the live server? It would
take too long to delete each scope one by one. I know I can delete all the
files under c:\WINDOWS\system32\dhcp and then restart the DHCP server service
but I'm worried this could cause problems? Also - if I wanted to roll back,
would I be able to copy those files back and just start the services to get
back to the current state?

Your help is appreciated




Brendon B