How do merges work for fields that can have multiple values (ISRC)?

MusicBrainz
1

The basics of merging seem easy: When I merge B into A, then empty fields in A will be filled with values from B if available, and values from B that already exist in A are discarded.

Is that the same if a field can have multiple values like ISRC, i.e. ISRCs from B are discarded if A has one already? Or are new ISRCs from B added to A?

1 Like
2

All ISRCs should be kept

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