KB ID 0000447
Problem
Normally you can just create a new scope on your new DHCP server, but if you have a lot of reservations that you don’t want to have to recreate (for printers network devices etc), then it’s a better option to migrate/copy the scope to the new server.
Solution
1. Copy all the DHCP settings to a text file with the following command;
[box]
netsh dhcp server export C:\dhcp.txt all
[/box]
2. Stop and disable the DHCP Server service on the OLD DHCP server.
3. Move the text file to the NEW server, and import the settings with the following command;
[box]
netsh dhcp server import c:\dhcp.txt all
[/box]
If it says the command is unsupported see the link below!