Sorry. What I mean is the following behaviour. If you are NOT in panning mode and you turn the heading knob then a cyan line shows up and gives you the new course/heading/track. If the AP is engaged and in TRK mode that's of couse the new track. If you then want to fine tune the new track for a far destination you normally go into panning mode and zoom in the remote location. But when you now turn the haeding/track knob nothing happens. No cyan line is shown.