So my goal is to use iCloud Drive to hold all of my ebooks and organize accordingly. On my iPad and iPhone, I have enabled iCloud Drive and by iBooks in Manage iCloud Drive, toggled that on too.
From the PC, using the iCloud for Windows iCloud Drive interface (which essentially looks like Windows Explorer), I dump all of the ePubs into a folder named eBooks (that’s what I named it, but would not be opposed to any other name, really). The ePub files don’t show up in iBooks. If I navigate to settings and iCloud Drive, I can navigate into the ebooks folder and see them that way. Is there something I’m missing?