Lesezeichen / Bookmark sync failed

Hi,

I tried to read my PDFs on my iPad. So my idea was to set bookmarks in the pdfs, and sync them with iTunes on Mac.

So I thought, I can read the books in my sunny garden and work on the bookmarks later in my office. But nothing happens.

The entire pdf-document was synchronized - No Problem. But no bookmarks.

Not from iPad --> Mac and backward.

I activate all options to sync on iPad and iTunes / iBooks on Mac.

Whats the problem wit iBooks- to sync bookmarks in my own pdfs between the devices via iBooks? Thats should work, isn't it?

Thanks for response 😉