This Universe Today article here:

http://www.universetoday.com/2009/07/16/nasa-laments-missing-apollo-11-film-makes-do-with-whats-left/

Is saying that the original Apollo 11 films were recycled.

But if you read the article carefully, the guy they quoted says he THINKS
that is what happened to them.

The only fact is that they have yet to be found, which means while it
is possible they were reused just as the BBC reused a lot of old video
tapes from the 1960s and 1970s, thus destroying perhaps the only
records of many of their programs, it is also quite possible that the
Apollo 11 films are still sitting somewhere in storage, waiting to be seen
once again.

They really need to be careful how they word things. I thought for sure
when I saw the article title that the true fate of the Apollo 11 films had
become known,when in fact it is just someone's speculation.