HT5213: iBooks Author: How to update your published book in the iBooks StoreLearn about iBooks Author: How to update your published book in the iBooks Store
Currently Being ModeratedHT5213 Re: If an iBook is updated and some content changes, how are existing notes/highlights handled?May 9, 2012 9:16 AM (in response to McDuFF14)
If you wish to maintain notes, consider issuing a series of books so that the user can keep and refer to existing info without losing anything.
Currently Being ModeratedHT5213 Re: If an iBook is updated and some content changes, how are existing notes/highlights handled?May 9, 2012 3:39 PM (in response to McDuFF14)
I experimented with this a bit during development of my book. It appears that, if you have notes attached to a book and update the book, after the update, the notes are initially gone, as if they had been deleted.
However, under some circumstances that aren't clear to me, the old notes can suddenly reappear. Sometimes all of them come back, sometimes only some of them. When you look at the notes, their anchoring position usually stays put (same page and geometry), but they are not necessarily attached to the same text, if the update has changed the way the text flows.
Occasionally, I believe I've even seen notes reappear from two generations back. (Not 100% sure about that.)
The upshot is that notes and updates don't go well together. What happens to the notes after the update appears to be an artifact of the implementation (i.e. an accident) rather than anything that happens by design.
Or, to put it differently, you have to assume that previous notes after an update are messed up (won't show, will show partially, or will show in the wrong place). However, the content of the notes appears to be intact: if a previous note shows, its text will be correct.
All of this applies to the preview functionality with IBA. I have not verified what happens if, instead, you export the .ibooks file and import via iTunes, and I have not checked what happens to the notes if you delete a book and reinstall it into the iBooks library.
At any rate, it appears best not to make any assumptions about the state of notes after an update.