Yes, once you edit the Internal Name(s) in the .lt2 file and save back to the library, you just click on the light set as usual from then on. You don't have to edit the .lt2 file again, unless you add a light to it. You might want to rename the .lt2 file (you don't have to), or save the original somewhere, just to be safe. I used wordpad to edit the .lt2 file.