This had one edition shelved four times and one shelved 41 times. The one that was shelved four times had a truncated ISBN13 in the ISBN10 field, so it was the one that needed to be deleted.
I added the correct ISBN to the default edition, deleted the one with truncated ISBN and recombined correctly, all of which you could have done yourself.
The one that was shelved four times had a truncated ISBN13 in the ISBN10 field, so it was the one that needed to be deleted.
I added the correct ISBN to the default edition, deleted the one with truncated ISBN and recombined correctly, all of which you could have done yourself.