First, I thoroughly enjoy using Scrivener. I have used it to plot a Second Draft of my screenplay and am second guessing myself about some changes.
Is there a way to create a copy of the draft (in index card layout) then make experimental changes to the copy draft? I would find it useful to be able to read the two versions, one above the other, without losing the structure of the original - just in case that was the one I really wanted.
Highlight the “Draft” as a whole by clicking on the icon in the binder, then choose “Duplicate” from the Documents menu, or Ctrl-D. Then you can work on one version in one split and have the other open in the other split.