The short answer: they weren’t…at all. Now, here’s the long version.
It was revealed in a recent interview that George Lucas, the father of the Star Wars movies, had originally planned to make Star Wars: Episode 7 before Disney purchased Lucasfilm. He even began developing some ideas for the next installment, which he passed along to Disney. As it turns out, though, the Mouse House and J.J. Abrams didn’t use Lucas’ treatment ideas for the current script.