The basic Tiller Pilots shouldn't be affected in any way. They are self contained, press pads for +/- 1.0 or 10 degs and Standby/Auto.
You set the heading and it pushes and pulls to maintain that.
They can be linked to most chart-plotters, and if that is working it OK it will follow the selected course though there is little advantage. It's nice, on watch, to have something to do, like compensating for leeway, tide run, lobster pots and so on. Helps to keep you awake but still allows time for a brew, sail trimming, swabbing the decks and so on.
I prefer the manual transfer from the course the plotter to the vessel. It's too remote
to leave the system to cope.