It become quite clear I need to override those classes to get this module working properly. Dave gave me great help, and there is no reason to take more o his time for this issue, so I ask here.
Does anyone, overrided those clases for their project, and could tell, me which functions and other classes to override ?
Simply creating empty class, deriving from UUnrealEdEngine and chanding in DefaultEngine.ini doesn’t work.
New class is picked up, but editor crashes on splash screen, so I guess there is more to it than simple class override.