In case where the system doesn’t identify a Discogs match, it is leading to missing genre information in SongKong. In these cases, despite genres not being found, I feel that when the replacement setting is configured to always replace, there’s an opportunity for discussion about how the whitelist should be considered. It might be beneficial to explore whether ignored genres should be removed from tags based on user preferences.
As a temporary workaround, I used the metagrater to clear all genre tags and performed a full repair.