When you change the name of a document and then upload a new document on the blue bar of the document you change the name of: It will not keep the name of the document you edit the name for. It keeps the initial name.
For example: If I change the name of a document from "ABC123" to "ABC768" and then upload a new document on top of it -blue bar- Under ProofHQ drop-down where you see the versions it will show you "ABC123" Not "ABC768" Please see attached image for reference.