Clip not showing multiple audio channels in properties

Just started using Kdenlive and I have some footage that has 6 audio channels. For noise reasons I want to mute the background ones.
In the docs here Clips — Kdenlive Manual 23.04 documentation it shows all the channels split out - but when I load it up it’s displaying as this

Is there a setting or option to split these out?
(I have enabled separate channels in thumbnails and can see there are 6 in there)