See, I think Jefferson knew all along EF/FTL was still around- he wanted to go back there with Grace, so he didnt think it had been destroyed.
He was able to grab the Apple for Regina- to me you cant destroy an entire world/universe & still be able to travel back in time in it- gone is gone once you’ve ripped a hole in time & space!
Regina 1st said our “Land” was destroyed – not world (Gold’s lessons are finally sinking in 😉 )
Regina was in Evil Queen mode when she said our world was destroyed- she was lying as she thought she’d managed to just get rid of Snow & Emma (Regina jackpot 😆 ) Which is also why she just didn’t say out right to Henry that they are dead.
On another note, in the lightning above the tent pic, it looks like a guy with a sword in there to me…..
I’m also stoked that Emma & Snow (I hope) are back by sometime in Ep4! 😀