Yes, I can confirm that if you are going to File | Open and opening an SGU or MGU file into the program, the mixer will reflect whatever settings were saved to the SGU/MGU file.

However, if you're using an existing song you already have open or even a new song you just started with a blank chord sheet but have muted some tracks you know you don't want to use, and you attempt to import something—like an MP3 file to the audio track—then that's still technically the same song and therefore the mixer settings you have applied to your mixer will be retained by default. When I go to File | New and start a brand new song, my muted tracks unmute and all changes I made in the mixer go back to the defaults as expected because I haven't adjust any settings to state otherwise.

Having additional information about how you're opening your files with give us a clearer idea on how to best instruct you.

Edit: Edited to fix some typos, apologies for that!

Last edited by Ember - PG Music; 08/04/23 03:03 PM.
Cheers,
Ember