Question about config/data file management

Thank you for the answer. Do you know any KDE application that does it ? It will greatly help me to make a patch.
Seems like KUserFeedback itself use a config object. Does that mean that dolphin analytics can only be stored in the same place as every other analytics using the lib ?
And finally do these type of question should be asked here, in the matrix or in the mailing list ?
Sorry, I’m a little lost.