Is there a way to undo a merge?

[SeerLite]

I want to merge 2 decks to test how they work together as one deck. However, I'm scared of being unable to undo it in case I don't like it (and having to import my questions again, losing learning progress).

Another way to do the same thing would be with the ability to clone decks. That way I could clone the two initial decks before merging, as a backup.

Thank you for this beautiful, amazing and intuitive app.