1. You cannot actually switch back from using a satellite to using https://cdn.redhat.com. You can't deselect the ca cert, thus clearing out the org/user/pass doesn't let you save saying 'Username, Password, Organization Label, and SSL CA Content Credential must be provided together' 2. If you change some option with the cdn configuration, select update, close the modal, and reopen the modal, the old settings are present.
Created from redmine issue https://projects.theforeman.org/issues/34256
Upstream bug assigned to None
*** This bug has been marked as a duplicate of bug 2041588 ***