Synched (via iTunes) iBooks not updating on iPad

I just synched last night and for the first time since I purchase my iPad (1st Gen) I'm having a problem. I made some changes in file names and categories on iTunes and some are synching and some are not synching on my iPad. I've checked all of my setting and everything (I think) is turned on.

Does anyone have any advise as to what I'm doing wrong? 😕

Thanks