On to, 03 elo 2017, Kristian Petersen via FreeIPA-users wrote:
The customizations are in separate files and are still there, but seem to be getting ignored for lack of a better description.
You'd need to describe more and in more detail. Look at https://github.com/abbra/freeipa-desktop-profile/ as an example of an external plugin that works and integrates with existing FreeIPA upgrade code properly.
You can look at that one to see what's different on your side.