When BB2 is paused and you send midi command from Midi Maestro by pressing buttons Part 1, Part 2, Part 3, etc., it will not start BB2.
In MIDI Maestro, when you press transition buttons, it sends Midi command CC:113 values 1-6 to transition to certain part. When you release transition buttons it sends Midi command CC:113 value 0 to complete transition.
According to MIDI implementation chart: As of v4.1.6, if the BeatBuddy is stopped the CC:113 value 0 command will start it from stopped".
So, this command works properly on BB1 v4.1.6. On BB2 it will not unpause the drum machine.