Hi TechHarmony, I am not Florian, but I come in for short to point you to some possible help.
In order to protect the novice user from destroying their Mp3tag configuration and format strings and so on, due to inexperienced manipulation on ini files, and to reduce support time for repair receipts, some time ago the developer has abandoned the concept of open human readable ini files in favor of a closed human un-readable cfg-file (not so good from my point of view).
Even for the very experienced users this step complicates reading and modifying saved user related configuration content. Changing the cfg-file from outside of Mp3tag is not recommended.
There exists a workaround tool which can read the item lists from MP3tag dialogs and save the data to a text file. See there:
GetMp3tagFormatStrings
DD.20101029.1230.CEST