Some shortcuts doesn't work in Audition

Hi there !

I'm a new user of Audition, and I have some trouble with the shortcuts.

I'm working on a french version of Audition with a qwerty keyboard, so I had to reassign some shortcuts.
It worked in the editing screen, the shortcuts were reassigned correctly, when I pressed the buttons it's highlighted, showing me the software knows which button is assigned to which shortcuts and link both informations.

But when I'm working on waveform ou spectral analysis, three of them don't work : the one I put on Q, E and A. (Fade In, Fade Out, and Erase the selection)

I thought the reason was a conflict between the qwerty keyboard and the french software, but I tried to map Erase on X, still doesn't work. It deselect my selection and put the read head (I don't know if it's the true english word, but you get it ) at the beginning of my now erased selection.

Fade in and fade out just does nothing.

Does anyone have a solution with that issue ?

Have a nice day !