Software Deployment

I am using the registry editor in configuration policies.  I have exported the key that I would like to use to modify a value on a set of machines.  I copied the contents from that exported key from Notepad and place the content onto the registry file text box.  When I save I get the following

Parse errors

no match for '@="10.10.10.10"'

What I'm trying to do replace one IP address info with another.    It's also supposed to be a reg_sz type.