According to the style guidelines, the special [dialogue] artist should only be used if the actors/whoever are not credited on the release. So for a release like the Mallrats soundtrack (https://musicbrainz.org/release/09678ee7-57de-4ae6-a85f-66b53e4b87e9), it should not be used because the CD artwork actually lists the people for each track.
Just making sure I’ve got that right before I clean up dialogue tracks on some soundtracks.