Yes, that would be the smoking gun. But we do have some (admittedly quiet) hard-panned clinks disappearing, as well as some centered louder clinks. I’m thinking the most plausible explanation for that is now that it’s a different mix. Other explanations are still worth exploring.
Going into this, I was assuming it was a stereo mixdown unless indicated otherwise. Now, I’ve flipped my stance–I’m assuming it’s a unique mix unless indicated otherwise.