Mixer volume settings in MIDI

[Lacko]

On SX700, when recording MIDI (song), I can change volume settings in mixer for individual channels, but not save these settings. There are always some default volume values, like 85 for jazzclarinet or 118 for cajun accordion and I am not able to save any other volume settings for them. Saving my volume settings into song itself or into registration memory actually doesn't save any othwe than default volume value. Changing volume in midi file in PC is rather strange when there is mixer in keyboard. How do you guys do this?

[Lacko]

Sorry, I have found this explanation:
https://www.psrtutorial.com/forum/index.php/topic,53040.msg413569.html#msg413569

Thank you, Chris, for detailed description what's a desperate guy to do after a whole day of torment. :-)