I have written some notes and highlighted some parts of one of my e-books on kindle. I can see those notes and highlights when I open the "My Clippings" file. But when I open the book, and try to see its notes and highlights via "Menu > View Notes & Marks", nothing is shown. I think this happened after I deregistered UserA, registered UserB, deregisterd UserB and registered UserA again. How can I see my notes when I am reading the book?