I need a bit of help with the setup. In P3D, I had to uncheck the 'enable controllers' box in the Options menu to allow the sim to receive commands from FSUIPC. What do I need to do within MSFS2020, as I have the Thrustmaster Hotas Warthog Joystick and Throttle - and do not know how to disable them - so that I can command the sim using FSUIPC.

Any help greatly appreciated.

I deleted the assignments for the primary controls axes in MSFS Controls, and set them up in FSUIPC.

You can mix and match... I currently have the ailerons/elevators via FSUIPC and rudder directly via MSFS.

Thanks Bert. So, I am making progress - in that I have now bound the elevators and ailerons to my joystick using FSUIPC 7, as well as binding the rudder to my VK rudder pedals.

Tried setting up the joystick hat switch - as I have done in P3D - using the various pan view options. All looks good within FSUIPC 7 but when I am inside and/or outside the aircraft the hat switch does not work at all. So, I thought it might be because the mouse is bound by default to pan views - so I created a new mouse profile and deleted all the mouse bindings - still nothing.

Curiously the elevator trim is working on the joystick - but not the break - even though it is set to repeat the action when operated.

Some progress - but I need some further help please.