In the “classical” tab there are two sets of options to not modify fields. On scrolling down the field list, unfortunately some of the field names are too long and too similar to be able to differentiate them. Stretching the dialog box does not stretch the list box and I can’t find a way of seeing what they are.
Unreadable field names
These are the MusicBrainz Work Level N Id and name fields. These were not originally available in list , hence it was originally large enough. Ive raised as bug
https://jthink.atlassian.net/browse/SONGKONG-1188
In the meantime if you want to what they are add them to the list and then you could view on the classical options page.
This was fixed in SongKong 4.8
AWESOME