The 3rd Party company is called SharePoint Solutions and they're based in the States. The product is called Extranet Collaboration Management 2010 and is working fine for the rest of the site.
The issue is all based around authentication and passing the user id through to QlikView in a recognisable format.
I wonder what your QlikView partners have tried so far.
From my perspective I have two questions:
Do you have any insights on how Extranet Collaboration Management 2010 passes userid to SharePoint? Is it through http header?
If it's not http header, Is there away to read the authenticated user id? If yes, maybe ticketing can be used.