Both the "log diff" tool and the "edited logs notifier" should trigger and display when the log type changes.
Several of my caches have logging requirements, and if they don't satisfy the requirements, I may need to delete their log. Sometimes persistent newbies will keep trying to log it and I have to delete the logs again.
I get an email with every new log, so I know to check qualifications then, but if a user logged it as a "note", then waited a while, and then changed it to a "found it", I would not have any notification of that and their log may stay without my knowledge.