Hi Flavio,
The Bus Config is a show setting, not per scene. So it’s normal that it doesn’t follow scene recalls. If you need to handle different bands or situations requiring different bus configurations, I’d recommend storing these as separate shows (on USB, tablet or PC).
As for the gain not changing, please check the Preamp is not blocked in the Global Filter or Scene Filters, and that the channel/s in question is not Safe. If this is not the case, you can open a ticket with our Support team at support.allen-heath.com and send us your show file so we can look into this for you.