Problem with Multidisc Albums

[Lio84]

Hi, I am a new french Minimserver user and I am discovering all the possibilities offered by the software. I use Minimserver with the Naimapp controlpoint.
I am currently tagging again my 400 albums of classical music.

Everything is fine except one problem with multidisc albums.
When I select these albums in the Naimapp, I see first the list of all the items contained in the album in alphabetical order and then the discs indicated as follow : >>Disc 1, >>Disc 2, ...

I would like to remove the items from the presentation because they are redundant with the Disc.
The problems doen't appear with Kinsky : I only see >>Disc 1, >>Disc 2, ...

I tag my albums with mp3Tag as shown in this example :

Album name = "Jacqueline du Pré-Concerto Collection, Disc 1"
DISCNUMBER = 1
DISCTOTAL = 4

Album name = "Jacqueline du Pré-Concerto Collection, Disc 2"
DISCNUMBER = 2
DISCTOTAL = 4

Album name = "Jacqueline du Pré-Concerto Collection, Disc 3"
DISCNUMBER = 3
DISCTOTAL = 4

Album name = "Jacqueline du Pré-Concerto Collection, Disc 4"
DISCNUMBER = 4
DISCTOTAL = 4

The track number are also filled

The file format is FLAC

I hope you will find the solution to my problem, maybe I have missed an option in Minimserver options. I hope it's not a problem with Naimapp because this app offers interesting possibilities with Naim's streamers. Is there a link with what you mention on the web site :
"Note 4: The Naim app has a default sort order setting of A-Z. You need to disable this setting to prevent ordering problems with multidisc albums." ?
If yes, how can I disable the setting ?

Lionel