I'm not sure what component this should be part of. Looking at the cataloging logs, it records when a cataloging record is changed, and what the record looks like at that moment. But it does not indicate what part was changed, and what it was before the change. This would be VERY HELPFUL. If all I want to know is when the record took on its current form, then the log is useful. If you are not purging old log records on a regular basis, then there is a chance you might have an older record showing the last change. Even if that were the case, you would have to compare it bit by bit to find out what changed. Please consider noting what parts are changed, and their previous state in the logs. This would be incredibly helpful.