I'm sure Challenge are at it, I asked them about Family Fortunes from 2001, which was Les Dennis' last series, and I asked why it was on Challenge a couple of years before not edited, bit only a week ago it was edited. And they said when they received the tapes they were edited like that. My point is, how can they be over edited if Challenge has already shown unedited apart from the competition after the commercial break?
I believe this refers to the new Challenge [TV] (AKA Sky) receiving the tapes from the old Challenge [TV] (AKA Virgin) rather than receiving them from the archive. I think they explained this on their Facebook page at some point. Basically, they are blaming Virgin for editing the episodes.
When they showed the episode with Nick Owen playing the bronze bully round I'm sure Jim mentioned that some of the TV-am team were on the Christmas special, with the end credit dating the episode as 1983. Now I've not seen all of the Bullseye's Challenge have shown, but I've yet to see the Christmas 1983 edition. They're quite funny about them as the only Special I've seen of Bullseye was the 1991 christmas special.
I believe all the episodes including the one shown today have had a 1983 copyright date so far. I wonder how common it was to change the copyright date on programmes in the early 80s? Nowadays even recorded programmes shown on the 1st January have a copyright date of the new year, even though the programme would have been made during the previous year. Did Central do that in 1983/1984? I'm thinking maybe they didn't.
I wasn't that surprised to not see the Christmas episode (which features TV-AM's Anne Diamond) but I was half expecting Bowen to wish us a happy new year in the episode shown today or at least for it to be an episode from early January 1984.
I just checked the Nick Owen episode again after your comment. Two quotes from Bowen stand out...
"A gentleman who breathed life in to TV-AM last year, will you please welcome the presentation talents of Nick Owen."
This might suggest that Nick Owen started at TV-AM last year. Wikipedia says that Nick Owen started as the main presenter of TV-AM in 1983, so this would place the episode of Bullseye as being made for broadcast in 1984.
"We had Anne on our Christmas show, your co-presenter of course."
This suggests it was made after the 1983 Christmas episode.
Sadly, it does look like Challenge [TV] are showing episodes out of order. Which makes it seem strange that they dropped episode 12 due to problems with the tape. If they aren't showing them in order, they could have just put another episode on.