Okay. That explains some of the confusion that is starting to appear.
You can’t really be sure what is which series. I think what you are looking at here is all the same series, but the artwork changes as they repackage and re-release these same albums again and again over the decades.
Look closer at this one. Check the edit history.
Look carefully at the link you were using to update the MB Release. Scroll down to the track list.
The problem here is the version on MB has a DIFFERENT list to the one you were using as a reference. Scroll down the page you were using as a reference and you’ll see track 6 changes, and then the last few tracks have different names and order. That makes it a different Release to the one MB had.
This means the one you found is a different Release to the version already here at MB. So the one you found should be a new Release in the same Release Group as the one you edited.
The different names and order of tracks is why the Release is different.
This is why it is very difficult to use second hand shops to fill in the missing items for these. Especially as shops will rarely have accurate details. Even Hosanna! probably don’t have accurate details due to the number of times buyouts will have changed the catalogue.
It is also why so much fuss is made over having a “Disc in hand” and uploading Real Scans as some of the best source material.