Regarding the diagram so far the only deviation between FS2024 and FS2020 that I could find is, that in FS2024 we did get a number of additional view contexts (Avatar, Photographer, …). But so far, from what I could see, all the “old” view contexts work in the same way as in FS2020 … “bug to bug” compatible I would even say (e.g. the “Custom Camera” bug is still in FS2024).
I did rebuild my FS2020 HOTAS command bindings in FS2024. Here you can see how that looks like on my side:
And all commands do work as they did in FS2020.
But one more question regarding you problem. How do you enter the “instrument” context?
I use the “Toggle Instrument View 1” command to get into that context in a predictable way. After that “next” and “previous” do as they should. Maybe that is where the difference is on your side.
UPDATE: It turned out that “Previous Pilot Position” actually acts slightly different in FS2024. It no longer will jump from “IFR” to the instruments cam loop.