I'm working on the new documentation wiki, and just grabbed the old instructions for the XML data importer to start from.
http://sr5-foundryvtt.privateworks.com/index.php/Chummer_XML_Importer
The Chummer XML Importer allows the user to scrape Chummer5a's datafiles and bring them into Foundry as SR5 system-compatible Items for use on Actors.
Keep in mind that it is a bulk import and unfiltered, so it can produce hundreds or thousands of Items, some of which may never actually be used, and all of which will need to be manually reviewed...