2. It is not possible. The replay file (Other then some text information) contains, the PACKETS, that the server sent, to the client. So, If the server doesn't send something, it can't be saved. And If you don't save it, it is like, it haven't even sent, by the server
3. Rename the mcpr file, to something.zip. Open it up, and there is a paths.json file in there. It contains the saved paths, in json format. (Unless, you don't have any saved paths ofc)