Books and PDFs disappeared, except for 1 PDF and 2 books. My books and PDFs appear on my iPhone 4, but since I had to format my computer hard drive, they did not reinstall in iTunes when I restored my account. Now, they only appear on the phone. I cannot get them back to iTunes, or iPad. If I say I want to sync books, iTunes tells me it will erase what's on my phone. I have all the right things marked on the phone and pad, but nothing is syncing as it should. What am I missing? Thanks.