The recent (15 feb 2019) reissues of Mahler & Bruckner by Haitink and the Royal Concertgebouw Orchestra now available from Qobuz are something of a disaster regarding their metadata.
The work/part metadata does not appear to be present, and the tracks are arbitrarily grouped. There are no composer credits shown.
The Bruckner set is product code 0028948346882 and the Mahler is 0028948346905.
The music is good though…