Yeah same issue here. I am using sitemap control for breadcrumbs purpose and my hierarchy is as follows
Clients.aspx
Client.aspx?Client={CLIENT}
Surverys.aspx?Client={CLIENT}&Survey={SURVEY}
PageQuestions.aspx?Client={CLIENT}&Survey={SURVEY}&Page={PAGE}
Question.aspx?Client={CLIENT}&Survey={SURVEY}&Page={PAGE}&Question={QUESTION}
I have same set of pages with differnt Querystring parameters. So, I dynamically create xml document and supply it as a data source. It works as expected all these pages but only for couple of querystring parameters. For example: on Client.aspx page the breadcrumbs appear for Client.aspx?Client=CompanyA but not for Client.aspx?Client=CompanyB
So wierd. Please post the solution if we have any fix for it. Thank you
Regards,
Shyam Arjarapu