Carsten
I am not clear what your question is. From the title I gather that you are looking for a way to have accounting records for commands entered in config mode. The answer to the question is to enable accounting for level 15 commands which include the config commands. All of which is included in your message. So what is the question?
If the question is how to get just the config commands without all the other level 15 commands I am not aware of any way to get just the config commands.
HTH
Rick
HTH
Rick