AppleGlot and switching to .xib

I am using AppleGlot for localization of my app. Recently, I upgraded al .nib packages by .xib files in my app. AppleGlot does not notice this switch, and just sees these .xib files as completely new files. However I would like to use the previous translation from the .nib packages to for the new .xib files. Reading the AppleGlot documentation, I was getting the impression that I could use a LanguageGlossary file to do this. So I copied the old ApplicationDictionary file from _ApplicationDictionaries to the _LangagueGlossaries, changing the .ad extension to .lg, as described in the docs. However this does not work at all. What I see now is that the 'localized' .xibs (after running all three steps and updating the work glossary after step 1) are just copies of the base (English) .xibs, untranslated. The terms to localize don't even appear in the working glossary. I am using AppleGlot v3.4 (76), and I was under the impression that this version could handle .xib files. Am I wrong? Otherwise, what did I do wrong? Or is this a bug in AppleGlot?

thanks,
Christiaan