Have Casio PX-360 with default factory settings. 1) Call MIDI recorder. 2) Record to track 1 some melody. 3) Call Mixer. 4) Go to Port C page and make adjustment of any parameter for part 1(Instrument 1)  for instance change Volume to 50. 5) Push the play MIDI button.  Results:  After step 5 the Volume value resets back to the one as it was set during recording.   Is it suppose to work that way?   I want that adjusted values would stay for Port C instruments upon start of MIDI playback.