I have two different songs with this issue. All other songs seem fine. If I change the volume of instruments in the mixer, they will stay set when I play the song. As soon as I stop the song, all volumes reset to value of 90. Except the melody part, which will stay as I set it. I tried saving the song with the settings I want, without playing the song first. But when I reopen, everything except melody jumps to 90. I have tried freezing/unfreezing parts, but nothing helps. Any ideas??