Need Help about swap field content

[LyricsLover]

You could start with the FAQ here:

Actions and batch-operations

How to swap the contents of 2 tag fields? Example how to swap TITLE and ARTIST: Create a new action in an existing action group or make a new action group. Action type: Guess values Source format: %title%~%artist% Guessing pattern: %artist%~%title% Note: The ~ sign is just used to separate the two fields, you could take any other sign that does not appear in your fields, e.g. ¢ or an extended unicode character like ∞ or ∑.

If this does not work for you, please show us a screenshot from a real existing music file
(pressing Alt + T or menu View - Extended Tags)