This article supplements an earlier article, posted a couple of weeks ago (http://geekswithblogs.net/cyoung/articles/90102.aspx), on issues concerning the use of XPaths to map between the hierarchical data structure of an XML document and the relational view of 'facts' in the Microsoft Business Rules Engine. As I suggested in the introduction to that article, I have repeatedly been asked to troubleshoot MS BRE issues which turn out to be related to the use of XPaths. Earlier this week, I received another request for help. The symptoms and solution to the problem are worth recording because they provide greater insight into this topic.
http://geekswithblogs.net/cyoung/articles/91183.aspx