While doing some testing on which tags and what tag contents get exported I noticed that Roon removes count (TOTAL) tags for PART and TRACK:
Original metadata (mediainfo output):
General
Complete name : ../[Classical Music]/Orquestra Sinfonica do Estado de São Paulo/Villa-Lobos - Symphonies Nos 1 and 2/1_1_Orquestra-Sinfonica-Do-Estado-De-Sao-Paulo_Symphony-No-1-Op-112-W-114-O-Imprevisto-I-Allegro-assai-moderato_6.m4a
Format : MPEG-4
Format profile : Apple audio with iTunes info
Codec ID : M4A (M4A /mp42/isom)
File size : 37.3 MiB
Duration : 7mn 26s
Overall bit rate mode : Variable
Overall bit rate : 701 Kbps
Album : Villa-Lobos: Symphonies Nos. 1 & 2
Album/Sorted by : Villa-Lobos: Symphonies Nos. 1 & 2
Album/Performer : Orquestra Sinfônica do Estado de São Paulo
Album/Performer/Sort : Orquestra Sinfônica do Estado de São Paulo
Part/Position : 1
Part/Total : 1
Track name : Symphony No. 1, Op. 112, W. 114 "O Imprevisto": I. Allegro assai moderato
Track name/Position : 1
Track name/Total : 8
Performer : Orquestra Sinfônica do Estado de São Paulo
Composer : Heitor Villa-Lobos
Composer/Sorted by : Villa-Lobos, Heitor
Genre : Classical / Orchestral Music · Symphonies
Recorded date : 2017
Cover : Yes
Rating : None
CONDUCTOR : Isaac Karabtchevsky
LABEL : Naxos
wrk : Symphony No. 1, Op. 112, W. 114 "O Imprevisto"
mvn : I. Allegro assai moderato
mvi : 1
mvc : 4
shwm : 1
Roon Export (mediainfo output):
General
Complete name : ../Roon-Export-Test/Orquestra Sinfônica do Estado de São Paulo/Villa-Lobos_ Symphonies Nos. 1 & 2/1-01 Symphony No. 1 'O Imprevisto'_I. Allegro assai moderato.m4a
Format : MPEG-4
Format profile : Apple audio with iTunes info
Codec ID : M4A (M4A /mp42/isom)
File size : 37.7 MiB
Duration : 7mn 26s
Overall bit rate mode : Variable
Overall bit rate : 708 Kbps
Album : Villa-Lobos: Symphonies Nos. 1 & 2
Album/Sorted by : Villa-Lobos: Symphonies Nos. 1 & 2
Album/Performer : Orquestra Sinfônica do Estado de São Paulo
Album/Performer/Sort : Orquestra Sinfônica do Estado de São Paulo
Part/Position : 1
Track name : Symphony No. 1 'O Imprevisto'~I. Allegro assai moderato
Track name/Position : 1
Performer : Orquestra Sinfónica do Estado de São Paulo, Isaac Karabtchevsky
Composer : Heitor Villa-Lobos
Composer/Sorted by : Villa-Lobos, Heitor
Genre : Classical / Symphony
Recorded date : 2017
Cover : Yes
Rating : None
ArtworkDescriptor : 0,3,
CONDUCTOR : Isaac Karabtchevsky
COPYRIGHT : (P) 2017 Naxos
LABEL : Naxos
shwm : 1
mvc : 4
mvi : 1
mvn : I. Allegro assai moderato
sid : 320137dd2f6d3a189a438d8eae9a33cdb636
wrk : Symphony No. 1, Op. 112, W. 114 "O Imprevisto"
Since other programs make use of this information it should get kept I think.
@support let me know if you need more info. Thanks
It may be related somehow with this topic: