Shrek I feel good found!

It probably wasn't officially released by Dreamworks because the test animation was a failure and I don't think many involved with the movie would have fondness for it. It reflects an unsuccessful time, where the film was on the verge of being cancelled and then they lost their star who was keeping it all together. Really it's a minor miracle that the movie released as an instant classic considering how troubled early production was. This test animation is so far removed from the final version and surrounded by dark memories, so I'm not surprised Dreamworks would rather just forget about it.

I think it's fair to call it found but to know there is still something lost, we already know nearly everything Shrek with Chris Farley had him scrubbed out of it after his passing and this looks to be an example.