Bug: Importing M3U playlists result in empty list since iTunes 10.4

Title says it all: UNC paths work only if they are mac-ified ('/' instead of '\'). This way, a normal UNC path name contained in an M3U playlist, like '\\TESTPC\MUSIC\ALBUM\Chris Rea\Auberge\01 - Auberge.mp3' from the M3U file will not be imported. Error exists since 10.4, not fixed in 10.4.1, worked before.