Occasionally, it seems the collective parts of mastery quests, if collected early, are un-identifiable after the fact. I had collected all parts of nightblood mastery, before getting the book. After getting the book, i could not identify any of the parts, so had to sell, and recollect. As far as getting stuck on an auto-update item, I've had it happen with several I did, I simply just left it the way it was, and eventually got the update, as you'll see plenty (in different forms) of most of the types all the way to LS, and EF/PF. There will be some mastery quests you WONT want to simply delete and start over, as the droppable parts don't seem to drop often.