Double processing of files at Save stage related to DiscogsUpdate

See

20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:AcoustidSubmitter:1962
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:StartMatcher:2791:2791:2791:11899
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:MusicBrainzSongGroupMatcher1:2791:2791:2791:11899
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:MusicBrainzUpdateSongOnly:0:0:0:0
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:MusicBrainzMetadataMatches:583:583:583:2879
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:MusicBrainzSongGroupMatcher2(SubGroupAnalyser):6:6:6:15
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:MusicBrainzSongGroupMatcher3(WithoutDuplicates):22:22:22:42
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:MusicBrainzSongGroupMatcher4(AnalyserArtistFolder):4:4:4:16
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:DiscogsSongGroupMatcher:360:360:360:2705
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:MusicBrainzSongMatcher:1595:1595:1595:1595
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:DiscogsSongMatcher:429:429:429:429
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:DiscogsUpdateSongGroup:1278:1278:1278:5484
20/10/2020 15.20.54:EDT:FixSongsReport:writeToBothLogs:SEVERE: Report:85:SongSaver:3841:3841:3841:15997

songs sent to save is more than songs loaded, problem seems to be related to DiscogsUPdateSongs because when removed this option worked without error.