User blog comment:Omega natsu2/Fairy Tail Episode 198: The Golden Grasslands, Review./@comment-24039250-20140906071858/@comment-7418318-20140906113258

If you see it through the multiverse theory it makes sense. Each decision creates parallel universes in which everything is the same except this one difference and it's consequences.

So in that sense the bad timeline still exists in a parallel dimension/universe/however-you-want-to-call-it that is just as real as the one the story is set in. And in theory they could travel to that other timeline, if they had the means and were able to connect with exactly that one, out of the untold myriad of other parallel universes.

But thanks to the destruction of the Eclipse Gate, the current timeline is now going on a different path than the one from which F-Lucy came.