Thanks for quick response.
Sorry, maybe I didn't explain myself. The full artist name gets displayed in the editor, but not in the player. In the artist column in the player all you get is the individual split parts of the original compound artist tag, if that makes sense.
The actual problem here is that my main system is Linux, where I use other player/organizer. Now all original artists tags have disappeared and ONLY one of the split tags appear in the artists field....