That would suck, indeed.

Anyway, a little while ago on eBay (maybe about two years ago) I saw that someone who had associations with Regent Sound Studios in London (near the Holborn Street Tube station [where Winston Churchill shacked up during WWII] and also where the Beatles recorded a few songs) offered up two 8-track reel tapes from Pink Floyd's 'More' sessions. This person was really detailed in what the labels said, and even had pictures of the tapes themselves. Too bad I can't remember what was on them.
But he only got them because Regent was throwing out the masters, and he only minded to grab three tapes (the third was stolen after the fact).
So this makes me think that the masters don't quite exist anymore, which is actually pretty sad.

And I forgot to keep tabs on that eBay auction, so I've no idea what they sold for.