For the config files : all. Simply all of them in my project (from my config folder to the other ini files in the saved folder).
When I removed these file is was during the crash of the build (solved by disabling the Internet access of Rocket). I continuer working on my project then after letting Rocket regenerating the ini files. Editing blueprints, levels materials and so on. I can’t be specific because I did too much things since this moment.
This is happening inside a new level based of the Default template (with the sphere, the torus and the box) and also with an empty level.