How to add a champion/challenger test to an existing EM in an Engagement Stream

[JLM]

I have an existing Engagement Nurture Stream running, with an individual EM already included in the stream (it's not a nested program). I just added a Champion/Challenger test for this Email. Will the nurture stream be smart enough to pull in the Test if it wasn't orginally part of the Email when pulled into the nurture? 

[TraceyBartz]

Yes, just make sure approve the test. Once approved the test will be used in all casts of the stream until you declare a winner.