Hmm ty. Not sure if my 'sync' app is glitching or something. But the upvotes I received make me inclined to think I'm not the only one who had that specific chain disappear all of the sudden.

Edit: K so they were deleted as suspected. But why? While some people disagreed with each other, it was a civil discussion with the intention of providing a solution to a real issue. Very concerning such a thing would get deleted at all.