"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy
We now know that FTL still exists in some form, since Regina spoke to Jefferson about the possibility of returning to it in episode 21. Before Jefferson even reached through the hat to a time and place in the past in FTL that was, Regina spoke as if FTL is a place that exists in the present. She mocked that Jefferson would have to return to his little hovel and sell mushrooms at market to support himself, or he could simply remain in SB in the mansion she gave him.