I saw there’s some shared acoustids between the original and 2018 remix, but not sure if it’s because the mix is the same or just an error… examples:
https://acoustid.org/track/6c214b1b-c423-4b9e-954b-c4eff091f011
https://acoustid.org/track/43cf7c2d-36db-49b0-916f-b7bfe6b6f808
In those two examples I notice only a single sample of AcoustID links to the original stereo, but 466 link to the new version. That kinda points to the one being a rogue.
I’ll go load up my copies shortly and see what I have. I’ve got at least three - 1994, 2011 and 2018 versions… back soon.
From my CDs as ripped by me. (2011 is in a Chinese knock-off of the Discovery box)
Pigs on the Wing, Part 1:
1994 - c864e97a-4a1f-4107-990f-7db39859d0df
2011 - c864e97a-4a1f-4107-990f-7db39859d0df
2018 - 6c214b1b-c423-4b9e-954b-c4eff091f011
Dogs
1994 - dfcb05f5-437b-440f-a5ab-d42aab08b828
2011 - dfcb05f5-437b-440f-a5ab-d42aab08b828
2018 - 43cf7c2d-36db-49b0-916f-b7bfe6b6f808
So I would agree that the two “Stereo version” linked in your examples should be disabled.
The pattern is same on all my CD tracks. Nothing 2018 matches the earlier versions.
Looking at all the AcoustIDs on the 2018 version it is clear one person has uploaded their one older CD once incorrectly. I’d drop that one bad link from all five tracks.
Thought that was likely the case, but better to be sure.