Yesterday, I was working on my approval books. Book #730 has 5 pages. As I paged through the book, 1, 2, then 4, 5 and 6. Where was page 3, and where did page 6 come from? I looked at page 6, and all the unsold stamps were inactive. Looking further, page 6 was actually page 3. I re-activated all the stamps on page 6 and saved the page. I just looked at book 730, and page 6 is now page 3 and all the stamps are active. Any ideas what happened??