Thank you for thanking me for my edit. But somehow, unfortunately, later on, another user named Jbrangwynne53 reverted my edits to the last version. Now, at first place, I was trying to point out that Episode 4612 did not yet air on PBS, instead it was replaced by Episode 4613. I do remember all of this at that time. And then, afterwards, Episode 4613 then aired in re-runs on PBS a few more times.