It's a pz3 - been meaning to try it in a cr2, but forgot until you mentioned it just now :) They are there in the pz3, and come in properly if you start a new scene with it. Only if you import it so as to modify the existing scene that you get the problem. Did try immediately saving it back out again and checked the results hoping they were just hidden as you mention, but it only had the two. Course, that was about the 43rd time I'd tried 'some' idea, so don't quote me on that :)