Board Thread:Wiki-Related Discussion/@comment-4975807-20180520221943/@comment-5925413-20180520223719

Winged Pig wrote: About the NEF - which we've seen after that time and know it wasn't part of the United Reams -, it isn't completely sent to the United Realms, but a copy of it is there (as Gothel's Tower is seen). So, in ~2030, when Drizella casts the curse, NEF is "destroyed", and it is fully sent to the LWM. And, in ~2024, Regina and the others simply call Sabine, Drew, the HH people and Kelly (who lived full ~6 years after the curse is broken), and they all move to the United Realms. That's my headcanon anyway XD (Not sure if I was clear enough...)

Regina brought Gothel's tower, meaning the NEF is part of the UR. Remember time goes way faster there, so the events from 701 to 710's Dark Curse should all take place within this 2018-2023 gap, otherwise there'd be a paradox.