RandomLos3r

I searched the forums and Google for some time now and I haven't found an answer for this, probably meaning its not possible... But is it possible to turn a Tekkit Main (A New Frontier) server with it's current map and turn the server into a Tekkit Lite server? Or will there be a vast issue with the Item ID'S and be impossible in which only a clean slate would have to happen?? Any help or input would be greatly appreciated, thanks.