Originally Posted by
shounen jump
So what if it changes the Aces backstory? Hayate's is already changed because she no longer has the book. Since she didn't have a Linker Core until the Book incident she'd at most be Nanoha's friend through her other friends.
We don't really know when the world's going to end, how else it effects the world outside of climate changes, and we don't really know why it happened. So we don't know how Nanoha would be effected. Is there going to be hard ships in her new life? Yes. But she seems like the kind of girl who would bounce back.
Does the TSAB even know of earth before the Jewel Seed incident?