Feature Request: On File Properties window, replace Labels (Static) with borderless readonly Text Boxes (Edit)

[ohrenkino]

I would use the function Convert>Filename-Tag to import data from the folder.
If the folder is also the current folder then you can copy from the folder-box in the tag panel.
If you need to copy from the filename, you can set value and field to %_filename% in the column definition.
To swap artist and title (and I hope we talk about the tag fields and not just the filename), there is a post in the FAQs:

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 ∑.