Below is an FAQ for the Ereshkigal server consolidation. You can find the official news post here.
FAQ
Q: My character is on Danaria. What happens to me?
A: Nothing. Characters on Danaria will be unaffected by the server merge, though all servers will need to be down for maintenance on the day of the merge until it is complete.
Q: My character is on Katalam. What happens to me?
A: Characters on Katalam at the time of the merge will keep their character name and hou