I discovered another way to transfer playlists to Google Music:
Install
gmusic-playlist.js in Chrome, export MusicBee playlist as m3u, open then save with notepad (to convert unicode characters), open in Mp3tag, export to csv (example code below), then import the csv in Google Music.
$filename(csv,utf-8)title,artist,album,playlist
$loop(%artist%)"$regexp(%title%,",)","$regexp(%artist%,",)","$regexp(%album%,",)",playlistname
$loopend()