I would like to first have a better understanding of how this is actually suppose to work before I too jump in and say that is not syncing from my iOS devices to my iTunes desktop application as I would want.
First I am able to add a course or a collection to either my iPad Air 2 or my iPhone 6 and have the course/collection then automatically sync to the other device. So if I add a course to my iPad it will automatically show up to my iPhone, good! Then, when I check off completion of a post, or add a note to a video lecture, that data too will be synced to the other iOS device that I own. Again, this is great and what I would hope to have happen.
Now what I am unsure of, but would like to have as well, is to have all this data in sync on my MacBook Pro as well. The idea being that I could pickup where I left off with a course from my iPad now on my Macbook. I want to see the courses that I have subscribed to and all my notes and any checked off activity and want it all to stay in sync across all my Apple products.
So is this behavior suppose to happen? I have not been able to figure that out for sure and do not see any way to take notes on my MacBook like you can with the iPad or iPhone iTunes U apps.