I found the info by first finding the HQ-Invento website in Europe rather than their US website (they are a european-based company), and then it was just a case of nosing around their service section - here's a link to the framing and bridling info for all of their sport kites:
http://www.invento-hq.com/supportsuche_e.phpand here's a link to all the sport kite manuals they have for download:
http://www.invento-hq.com/index.php?option=com_content&task=blogcategory&id=120&Itemid=214as there was no specific Yukon manual, I looked at their most generic one, and saw it had that diagram showing the bridle.
As to why you didn't get that manual when you bought the Yukon, I can't answer that - at least they have some info available online.