Selected PDFs won't transfer across....
I have selected all the books i wish to appear on my iPad Mini (ios 8.1.3) on my iMac (Yosemite 10.10.2) however some are not appearing once I have synced. The books appear on iBooks on my iMac but as I am forced to use iTunes to transfer across the task is infuriating, tiresome and also failing. I have airdropped these files across but this is then removed as I try to sync new PDFs across at a later date, with the correct files checked within iTunes.
What should be a simple proceedure is a constant chore and if I could use something else I definintely would
iMac, OS X Yosemite (10.10.2)