I also have a 2017 Anthem 44b. You posted about getting a TSB from Entegra about the door access motors electric connection (see below). 2 questions. How did you get the TSB, are on a special list to get them? How can I get my hands on a copy of that TSB??
On a side note, and pertinent to your story, yesterday I received a TSB from Entegra explaining how to check the connectors on both sides of the engine access door for male to male connectors. Mine had male to male on both so just a matter of time before I had door problems like yours.