We've heard feedback from clients that they'd like to be able to edit all of the results for an Entity. At the moment, you can only edit Entities selected on a page, so if there are thousands of results for an Entity across multiple pages, you can't edit them all via Edit Selected. Perhaps there should be an additional option on a page to select all results, not just those displayed on the page.
Please add your support to this request if you would like to see this developed.