Trying to set up Maya controls. 'Alt Left mouse' doesn't work for rotate

Hi,
I’m trying to set up blender for maya controls, I’m doing it in 2.8 but I had the same problem attempting to do it in 2.79

There’s something weird going on when I try to change controls for rotation to left mouse.
I’m starting off from the Maya preset.
when I try to set view3d.rotate to Alt + Left Mouse one of 3 things happen:

  1. It works only in object mode (can’t rotate in edit mode)
  2. Works neither in object or edit mode
  3. Can’t even set it up in preferences - when I press alt left mouse it changes automatically to middle click.

I tried to delete all Alt left Mouse hotkeys so there is no conflict but it doesn’t seem to do much.
Any tips?
Thanks