The replies to the Breakfast tweet are so depressing. It's like a swamp of idiots have gathered in the same place - proud at how they figured out the BBC's cunning plan

Especially those thinking they need to go down to some sort of archive to dust off old VHS's of Boris!
Of all the conspiracies in the world, some of which may well be true, the idea that it was anything other than a genuine human error is laughable. Mistakes. At work. Do happen.
I tweeted out a genuine question of what was so wrong of them broadcasting footage of the same person doing the same thing in the same location. The abuse I got was... well you might imagine.
I am still slightly puzzled at all this furore however. If they shown this footage to look as if he did lay a wreath when he didn't lay a wreath at all on Sunday - I can understand. But he did.
Whether they shown the footage from 2016 accidentally or yesterday - he still did exactly the same thing.
It's not the same thing. It's placing a wreath the right way up, which is a different thing from placing it the wrong way up. Therefore, had it indeed been what your question was asking, then there wouldn't be anything really wrong except that it's not the right occasion so is not the historically accurate truth of what actually happened. However, it was wrong to broadcast the same person doing a different thing even though at the same location, as that is inaccurate on the substantive truth of what he actually did and, to eagle-eyed viewers, gives a misleading impression that he placed the wreath correctly when in fact he did not. Showing the correct video would not have given a misleading impression, so it is substantively different, even though I wasn't eagle-eyed and the point passed me by.
Nonetheless, whilst the initial assumption is that this must be deliberate, because it's not immediately apparent how a three-year old video gets played instead of one filmed only just now, It's been explained as to why this wouldn't require a special manual archive search. The reason why the wrong video got on air therefore has been adequately explained to me.