I just tried this for testing purposes and it seems like this also does the trick. The only minor annoyance is that for already in the Pool existing audio files Cubase asks “Media [Filename] already in Pool. Do you want to create a new version or use the existing?”. You will have to click “Reuse” for every single one. I noticed this message box can be skipped by holding down the letter “R” (for Reuse) on the keyboard which is going to apply this to all existing one after the other.