A feature that allows you to copy the entire document as a new document (including links), keeping the original. Thanks!
Wenjun Gong (MSFT Product Team) commented
Thanks for the suggestion. Are you asking for a Save As command to save a copy online? Today you can find this command from File -> Save As. After the Save As, the original one will be kept and all of the content will be copied to the new one.
Please let us know if you have further question and looking forward for your more ideas!