OK I spoke too soon re midi mapping. I am able to map faders and rotary controllers but not on-off buttons, which map to both VB3 and Vintage B3 OK.

Just logged in to my account and notice that the latest version of B-5 V2 is dated 3rd July 2017. Downloading now, will I install and see if that fixes the button mapping issue.

MainStage 3 | Axiom 61 2nd Gen | Pianoteq | B5 | XK3c | EV ZLX 12P
Hoping everyone stays safe and well and sees this through to the other side