I have a problem with the iBooks collections feature.
Since upgrading to a new operating system on my iPad2, the Collections function does not seem to work properly, certainly not like it worked on previous the operating system. If I move a “book” (actually a pdf) to a new collection, it remains in the PDFs library as well as showing up in the new collection. If I delete it from the PDF library, both copies are deleted. I want to be able to organize my pdfs by category, and this change to the behavior of the program is frustrating.