If you plug in the Mixer, it will revert to either RELative mode. The pitch will only be available if you switch to INTernal mode, which means you will lose ocntrol of your Decks (Turntable or CDJ). Pitch Fader only show in INTernal mode which is what controllers run in.

This is not great for turntablism. Sometimes you might want to pitch the tune right up digitally. Then slow the turntable right down, but keep the original pitch of the tune. but the turntable is turning much slower. so you can scratch over a smaller distance.
This used to be the normal way. The pitch sliders stay on in serato DJ lite. Do you need to buy the pitch n time pack to be able to do what it used to do as standard now?

i’ve not used it for a long while you see.

you know you can have your pitch slider Range from +8 to +50

couldnt you switch to internal mode adjust the pitch then switch back to relative mode, its a long way to to things but it can be done?