Documentation and Suggestion for transitioning from Spacewalk to Red Hat Satellite 6

We are managing Red Hat servers via Spacewalk and trying to transition to Satellite 6. We have already purchased the required subscription and set up the test server. looking at some documents from Red Hat, the transition process looks very complicated as currently we have dev, test and prod servers on Spacewalk. Is there any updated document on this topic from Red Hat? Also, what type of support does Red Hat provide for this particular transition task? Any suggestion would be appreciated. Thank you.