There will be a converter for our current terrains, but we'll still have to go in a fix some things around. Things like fields on the coast that are now 1mi.x1mi. are going to be as big as 4mx4m possibly, putting most of the base in the water. Just things like that. I hope not much else. I imagine that HTC will have NDILES ready to go at launch. I know I have around 12 terrains on the server that will need "converting".