The examples in “step2: Edit Trigger” only mention the event types ‘Created’ and ‘Published’. I looked all over for the event type that is triggered when a piece of content is turned into a draft, before I finally found this post:
Please please please add a list of all the event types, it would have been so much easier! The OP in the link is completely right about the usability aspect.
By the way, I assume that the event type ‘Unpublished’ is the one that is triggered when a piece of published content is turned into a draft again?