Quote from a dev on the forums:
...more information on the character transfer process, especially in regards to things such as Legacy levels, will be released closer to when character transfer is available (currently scheduled for late April).
The Legacy system complicates the character transfer system considerably. We're aware of the implications with transfers though and working to try and ensure the smoothest transition for those with Legacy levels.
Guild Wars2 - Beothel (Sylvari Ranger), Ailtrai (Human Engi))SW:TOR - Beothel (Sith Marauder), Illusia (Chiss Sniper)LoTRO - Beothel (Human Lore-Master)WAR - Beothel (Chaos Marauder)