Digital Booklets in iBooks

I came across something awhile back about being able to just change Digital Booklets into Books to read on your phone/iPad in iBooks.

http://support.apple.com/kb/ht4194
Apple even tells you how to do it.

Well my reason for posting is that I cannot get it to work. They show up in the Books section in iTunes but will not sync to my phone no matter what. I have the Books tab for my iPhone set to sync ALL books and still nothing.

Anyone else know how to fix this problem?

 

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

I take it no one knows anything about this.

 

I don't even have a PDF tab, I can add PDFs and it'll show up but not the digital booklets.