Youtube – How to go back to the old YouTube playlist editor

In the old YouTube, if I'm watching a video from my playlist, I could delete

YouTube new additions allow you to Delete videos (for non-autogenerated playlist and unless they have been deleted already).

and rearrange videos in that playlist using the bar at the bottom of the page

This functionality is still lost in the playlist (or at least I wasn't able to "drag" videos around)

1. Navigate to the URL of the playlist you want to copy.
2. Click on the menu button on the right (3 vertical dots).
3. Select "Add all to..."
4. Either add the videos to an existing playlist or create a new one.

Done! {See Attached Screenshot}

In order to see with the "Add all to..." button you need to append the following to the playlist URL: &disable_polymer=true