tiled textures from world machine

Hey there, I’m trying to export the tiled weight maps from WM to UE4 and 2 questions came up.

  1. If I have more than 1 area in the map (ex. a lake and some mountains) and I don’t want the splat map of the mountains to affect the lake area how can I do this? I was thinking about making it by setting on photoshop the splat map to black in the areas that I don’t want to be painted in the map, is that the best way?

  2. How can I export a tiled splat map/weight map? I did my search about this and I didn’t find any thing useful, even in the Kite Demo it wasn’t clear how they exported it.