I just discovered that there are some localization teams that have a language pack translated but don't have a CVS structure translated.
I remembered that before I got Romanian firefox released, I created a script that made the conversion from the CVS structure to the language pack and it was a nightmare.
Anyway, I think in Narro you should have the CVS structure. You could have the language pack structure and export that, but you do fight to get in CVS right ? So I assume that having in Narro a converter from CVS to XPI and XPI to CVS is a must, so I'll start working on it.