Should I be using Cube Black app or 4.0.6

HI all,

I have a Nimbus VTOL from fox tech. When I received it I had to update Ardupilot and parameters. Foxtech advised to use Cube Black Apj and their PG20 cube black parameter list, which I did. All seemed fine until I tried to use Cube Black apj for QGC and got a number of errors.

It was then suggested on another site that I should update to 4.0.6. Which I have done and re-installed my parameters. I think this process has reverse 1 of my parameters relating to the PG20 and it is now drawing from the wrong battery in vtol mode. As I’m new to Ardupilot is it possible / common / rare for new Ardu pilot builds to change /remove existing parameters. Or am I needing to look elsewhere to how this occurred?