I don’t believe so
Going to the FX track should be such that it still gives focus to the last track - that’s the way it has been (for this reason) from the beginning
So the keys should play the same voice if you press the FX track button once (if you press twice you put FX in FULL focus, rather than AUDITION focus so to speak (the two states are lit differently)
If you wanna do this externally, you should use a keyboard talking to the auto channel of the A4, then it behaves like the onboard keys
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