Updating iBooks after Copying a Course

Hi!

This is a hypothetical question at the moment but may be very relevant in the fall. I'm wondering if there is a way to mass-update an iBook via iTunesU.

Here's the scenario: I want to use iTunesU to distribute in-house created iBooks to several different sections of the same course taught by different instructors.

My first idea is to create the course once and then copy it to each individual instructor. In this case if one of the iBooks needs to be updated after copying the course if I update the iBook in the original course will the updated iBook be 'pushed' to each of the copied courses?

Alternatively, would it be better to duplicate the course for as many sections as there will be and then add each individual instructor as a collaborator? In that case I suspect I'd have to delete and replace the iBook in each of the individual duplicate courses. Is that right?

Is there a better way to deal with this problem?

Thanks,

Jesse