No that doesn't work at all. Just get the XML data in the IMP file. Also no option for multi HTML that I can find either. Having said that let's load calibre:
Add book, Select the zip file. Ask CAlibre to create epub, hit convert
Back into ebook builder > create imp > file > ludo.epub and....
Failure. (Can not create ebook)
Oh well.
pretty darn close though.