If you made a ram dump, then all you did was take a raw grab at the available memory. The game doesn't know how to inject ram, and nor do programs since ram is constantly changing (it is random access afterall). So you'd have to write a program that does it, or do it manually (which will take a helluva long time to do for a town 'copy').
Well, I am lost. Do you have an ideas how to rip a dream code town and replace my old town with it? I have gateway, ntr cia, new 3ds xl, and emunand 10.7