How to create playlist based on Up next songs in iTunes? Even better- how to save playlist you are currently playing, based on your history + Up next?
I haven't found any "one click" method, but these steps do the trick:
You'll need to switch to the History view in the Up Next pane and repeat the process of selecting tracks and adding them to your new playlist. Click "Done" in the playlist sidebar once you've finished adding tracks and putting them in the desired order.