Let's try some quotes:
This is a quote 1.
This is a quote 2. Can I go back to quote 1? No, because Markdown doesn't allow that.
Can I go to quote 3? Yes. But how about quote 1 again? Nope—you can never go back a level.
That's unfortunately just how Markdown works.
So you don't have to switch between tabs:
> This is a quote 1.
> > This is a quote 2.
> Can I go back to quote 1? No, because Markdown doesn't allow that.
> > > Can I go to quote 3? Yes.
> But how about quote 1 again? Nope—you can never go back a level.