There is a tread that meanders around the problems when exporting data with linebreaks/linefeeds.
Backup and restore
As the lyrics field is one of these fields, the export of %unsyncedlyrics% to a text file falls in this general category.
and if you dare to read German have a look at this thread - the code should be easy to identfy and that is what you need.
Wenn Export nach *.csv ausgeführt wird -