Until now, ID was the only option used for a URL that points to a chamber's specific file, but from now on, you can also use path base URL that reflects the folder structure.
Due to this additional feature, now you can decide on a URL that points to the file before the upload. Please give it a try and make a full use of it. Please note that unlike ID specification, the URL will change when the file is relocated. Also, the conventional ID specification continues to be a viable option.