[CA11] Evolution Auto Pilot and powered back bone

I am installing these items: ACU 400,EV-1,, 3 i70s, ITC-5 running wind, speed and depth.

The previous setup was Axiom 12", Smart Pilot, 2 x St60 tridata, 1 x st60 wind with the powered backbone for nmea 2000/seatalk.

Do I still leave the power connected to the backbone? Or does the power for this come thru the ACU 400 autopilot now?

Thanks!