Ah, okay. Just tried it and working as you described - thanks
When the mixture lever is towards the pilot, it's full rich - away is weak/lean
The throttle lever catches the mixture lever as it is closed and moves it to full rich
What doesn't happen though is that if you have a lever display console up, it doesn't move the slider to full rich as throttle is decreased. When you move the throttle back to full and then lean the mixture, the mix lever will jump to where it was previously.
Difficult to describe, but definitely happening.