I'm guessing what probably happened is that they tossed the negative trims and only kept the negative actually used in the feature, and all that remains were workprints. In some cases, all they may have is lousy 3/4" standard-def videotapes of the workprint. In the case of Blues Brothers some years ago, John Landis said he was extremely angry to find out that Universal threw out about a half hour of outtakes from their vaults, including the original camera negative, and that no copies of those scenes survived. However, years later, somebody found an intact workprint that was slightly beat-up but otherwise OK. They cleaned it up as best they could and dropped it into the recent remaster, and that's what went out on Blu-ray. I looked it and thought it actually didn't look too bad. I think given that John Hughes has been dead for a few years now, he wasn't around to police Universal and make sure everything with his hit films had been carefully saved and preserved in the vaults. It's possible if they had started the search for Breakfast Club outtakes 20 years ago, they might have had better luck. I was part of a team of people who put together about 20 more minutes to Oliver Stone's Nixon some years ago, and we had to sift through tons of workprint, IP, negatives, and DAT tapes in order to put it together as best we could. The final version was a combination of all of these, and given what we had to work with, it wound up looking OK.