Is there any way I can (on the same track) send the notes via MIDI, but modulate a filter via the CV/ENV output?
Yes. In Settings set the CV Assign to Modulation and then you can use the Modulation CC lane in that track to send CV. CC #1.
Thank you! Then I assign modulation to a encoder… And the filter doesn’t change (it’s a behringer model D). With my Arturia Keystep it is just “plug and play”.