hi
one feasible way out here is you can copy the whole lot of config into a notepad file & remove the .txt extension from it then TFTP (copy) the same onto ur box as a startup config.
This will be ok if you are parllely setting up a new box with the other one running in production network.
coz after tftping u need to reset so that the config will be effective.
But if u have to do in the box which is in the live network do copy and paste but dont do it in a single strech which mite end up in erroring.
Just take step by step of like around some 10 or 15 peers at a time and paste on the prompt.
Coz we did face some kinda error when we copy paste the whole lot of thing onto the prompt..
regds