You can see why this is frustrating - I have a view that I want to retire and I can't unless I check with each PO on who owns the notebook 'Notebook 03/29/2015 11:16' !
What would also help is to have the actual name of the saved view in the notebook listing. For example, if you have a notebook with several timelines and pivot tables, those are just listed as 'Product timeline' and 'Pivot table' rather than their saved names.
Allow me to add to this. I would like to be able to see in the Export button if a view already exists in a notebook. It would be as easy as showing a little checkmark next to the available notebooks.
You won't be notified about changes to this idea.