How to make Ini files visible by default

I use the UDeveloperSettings class for custom settings. But the .ini files created by default are empty.
To overload a variable, I need to specify the module name and class name, and then specify the exact name of the variable. This is not convenient for testing, because all available settings are not displayed in the ini file. Is there a way to force ue4 to generate files with all available variables by default?

I too wonder if this can be done somehow. Is it really impossible to have Unreal rewrite the config files without defaults each time the game is run?