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I'm not familier with your model and/or it's electric schematics, but I think with a boat this new you should be able to get an answer from the BW dealer or call customer service at BW direct.
In all the cabin cruisers I had I had to throw a battery switch to get my accessories to run of inverter. i.e. I never unplugged my AC outlets. I had to turn switch over when on shore power and/or generator.
As for my trickle charger I put in so anytime I had 120/1/60 (shore or generator) it would be charging the house and starting batteries.
Call BW or study your electric diagram.