I meant to create this documentation at later time, or at least after I am done with the project (SSO authentication is just a part of it). But since I am receiving emails from folks inquiring how I finally sorted out the problem I posted in this thread https://community.qlik.com/thread/175295 in the community, I decided to go ahead and develop a brief documentation of my implementation.
The documentation assumes that you have read and followed Qlik documentation SAML authentication.
I hope this paper helps one way or another. Have a good day.