I don’t want to mess with something so delicate, so I prefer to just report it and let those who have more experience than me do it 
https://musicbrainz.org/release/ec93e01b-fc12-4649-88ea-6d7e27e807dc
https://musicbrainz.org/release/706c521e-362c-4d8d-bb86-7f66c3e90435
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There were several merges here, IMO.
The duplicate you spotted and also the second CD in the set.
I have queue 7 edits about these.
You can review them. 
2 Likes