I noticed that it is not possible to edit track names using the basic tracklist editor in a simple manner. I will use this release as an example:
http://musicbrainz.org/release/7986cd2f-da57-4a28-ae40-c4c5237d5153/edit
Because the behaviour is depends on the state of the "parse artists" option I show two cases of editing the track titles:

a) with the "parse artists" option turned off: Artists are removed from all the tracks which names were edited (even in smallest detail). In this case only track 8 (not edited at all) retains the relationship to the artist (Claude Debussy):
1. Serenade for Strings in B Minor, Op. 22: Moderato
2. Serenade for Strings in B Minor, Op. 22: Tempo di valse
3. Serenade for Strings in B Minor, Op. 22: Scherzo
4. Serenade for Strings in B Minor, Op. 22: Larghetto
5. Serenade for Strings in B Minor, Op. 22: Finale. Allegro vivace
6. Clarinet Quintet, Op. 115: Intermezzo
7. Concerto Grosso, Op. 3 No. 3 in G Major
8. The Girl With the Flaxen Hair
9. Concerto for Bassoon and Orchestra in B Flat Major, K191: Allegro
10. Concerto for Bassoon and Orchestra in B Flat Major, K191: Andante ma adagio
11. Concerto for Bassoon and Orchestra in B Flat Major, K191: Rondo. Tempo di menuetto

b) with the "parse artists" option turned on: Recordings are disassociated from some of the edited tracks (not from all the edited tracks). In this case tracks 9, 10 and 11 were disassociated from recordings:
1. Serenade for Strings in B Minor, Op. 22: Moderato - Antonín Dvořák
2. Serenade for Strings in B Minor, Op. 22: Tempo di valse - Antonín Dvořák
3. Serenade for Strings in B Minor, Op. 22: Scherzo - Antonín Dvořák
4. Serenade for Strings in B Minor, Op. 22: Larghetto - Antonín Dvořák
5. Serenade for Strings in B Minor, Op. 22: Finale. Allegro vivace - Antonín Dvořák
6. Clarinet Quintet, Op. 115: Intermezzo - Johannes Brahms
7. Concerto Grosso, Op. 3 No. 3 in G Major - Georg Friedrich Händel
8. The Girl With the Flaxen Hair - Claude Debussy
9. Concerto for Bassoon and Orchestra in B Flat Major, K191: Allegro - Allegro - Wolfgang Amadeus Mozart
10. Concerto for Bassoon and Orchestra in B Flat Major, K191: Andante ma adagio - Allegro - Wolfgang Amadeus Mozart
11. Concerto for Bassoon and Orchestra in B Flat Major, K191: Rondo. Tempo di menuetto - Allegro - Wolfgang Amadeus Mozart

Is this an intended behaviour? Should not basic tracklist editor allow editing without disassociating existing links?