BBC Four - Kids Tv through the ages week

Anyone see the 'When The Stranglers Met Roland Rat' & the 'Swap Shop' programmes?

Can someone explain why on the 'Swap Shop' prog, the Bucks Fizz clip where they mixed 2 of them in Jersey with the other 2 on a CSO in London, was a surviving 'Viewers copy' in crap quality, when on the 'Stranglers' prog, the same clip was in a more broadcastable copy?

Did the BBC researcher on the BBC4 stuff somehow find a better copy for the newer prog, since the 'Swap Shop' was originally transmitted at Xmas, or is there another reason?

I don't know, perhaps showed how the viewers related with the show.

Anyway, a great show but also sad in the way it described the change and eventual end in music and kids TV.

I'd guess the swap shop tribute alerted the archive researchers of Kids TV on Trial to try and dig it out - it's a really good clip and I imagine it's just been forgotten about rather than lost. Perhaps Unique's budget didn't stretch to trawling through the archives so they took the viewer's copy