I tried importing back a playlist I exported as test.csv (as text file, only visible fields).
Renamed as test.txt, the file is imported as a document (even if the command was "File/Import Playlist").
That is even before I reduce the fields in the text file to only [Artist] and [Name]...
This is the file:
Seq,Image (small thumbnail),Name,Artist,Album,Rating,Genre,Track #,Duration,Bitrate,File Type,Date,Filename
1,,(I Can't Get No) Satisfaction,Rolling Stones,Big Hits (High Tide And Green Grass),? stars,Rock Pop,1,3:44,256,mp3,1966,D:\Media\byGenre\Rock Pop\Rolling Stones - Big Hits (High Tide And Green Grass) - (I Can't Get No) Satisfaction.mp3
2,,(Just Like) Starting Over,John Lennon,Billboard,? stars,Rock Pop,4,3:57,160,mp3,1981,D:\Media\byGenre\Rock Pop\John Lennon - Billboard - (Just Like) Starting Over.mp3
3,,6th Avenue Heartache,Wallflowers,Bringing Down The Horse,3,Rock Pop,2,5:37,192,mp3,1996,D:\Media\byGenre\Rock Pop\Wallflowers - Bringing Down The Horse - 6th Avenue Heartache.mp3
.m3u format uses the paths, and I would like to use only [Artist] and [Name] if at all possible, hence my tests with a csv text file...