It would be a lot faster to add references if you were able to paste the PW URN from the PW Explorer directly into the Attach Reference dialog box instead of navigating the project file tree. I know you can use the PW search features, but if you're already in the correct spot in the PW Explorer, a copy and paste is fast. Alternatively, dragging and dropping the file from the PW Explorer might be an option; I've heard you can do this from the File Explorer but it doesn't seem to work with dgns from the PW Explorer.