Thank you for your feedback on ways to improve our product. While this is something we understand would be useful, it's not on the short-term roadmap. Please continue to show your support for this idea.
When a field name changes users are having to recreate the bookmark from scratch, this is hundreds of bookmarks for thousands of users. Its not an efficient use of their day to recreate bookmarks, it would be much better if they could edit the bookmark with new field names.