Hello Luca and thanks a lot to post about this issue with Falang.

I know that Falang DB layer seems to ignore the query in the router.php of the com_content to retrieve the correct alias and it ignores even the 'slug' field used for the sitemap, a different approach based on PHP concatenation of id and alias should be used.

If you have found a solution in the XML view i would be pleased if you can post here or give more information as a reference for me and for other users. Moreover i can evaluate a possible integration in the next release of JSitemap. As an advice, if you needed to edit the XML view template file, it would be ideal using template overrides instead of hacking the code of the component.

Thanks again for your time and collaboration

John