muting sounds in the palette mode

Hi,

i am using the 2.8.6 demo version of HN2.
How can i mute specific tracks/sounds in the Palette mode?
Example: in the combo "Studio 64" there is a solo sax, that i don´t want to be played.
I muted the track "solo" in the mixer and i already set the fader to zero, but nevertheless it plays in the palette mode.
It seems thate the sound is muted only in the song mode.

Midi config is out-of-the-box: internal gm sounds via soundcase.

Thank you
Thommas