[Zope] cookie crumbler - preserving variables in URL

I'm using cookie crumbler for authentication Often, the pages that require authentication have a variables on the end of the URL. http://www.site.org/updateListing_html?pid=22 After authentication, these variables get dropped generating an error for the dropped variable redirects to: http://www.site.org/updateListing_html How can I modify the cookie crumbler methods to pass these variables and redirect to the proper URL? thanks -- David