Use them to show that released failures occurred, not to assign a result to a fixture you can't identify. Have you got anything linking the modification to individual brackets?
Talk to the person who moved it. They may explain what changed even if you cannot recover which bracket used it. Keep those two answers separate on your comparison.
Henry, that's worth checking before anybody works out a percentage from the folder. I was thinking about identifying the fixture, hadn't considered which brackets made it into the photographs.
Then a fresh observed set is more useful than another week guessing the old order. Define the incoming fit-up, current fixture arrangement and released check with fabrication and quality. Follow every bracket in that set, not just the ones somebody wants to photograph.
We've followed a small complete batch with quality and fabrication: fixed fixture identification, incoming checks, released measurements, then separate correction entries where needed. The estimator now sees that work instead of only final passes. The old photos remain examples, not our rate calculation.