Guild Wars: Eye of the North and Nightfall?

I have ALL of the expansion packs for guild wars except for Factions and the just the other day decided to go out and get Eye of the north. My friend only has nightfall, and ever since i started playing in eye of the north i dont know how to get back to nighfall, Is it even possible??

I`ve tried asking other playersand searching on the internet, but somehow im not getting any answers....Can someone tell me how to get back to nightfall from Eye of the north??

Thanks!Guild Wars: Eye of the North and Nightfall?
1. Go to the map screen.

2. Zoom out by clicking on somewhere that is not a town or dungeon.

3. Click on the large boat marked "Travel"

4. Sail back to the capital city of the starting island in Nightfall.Guild Wars: Eye of the North and Nightfall?
Um, just map there. Click the boat.