Is there a way to take my existing terrain, which is a 1024x1024 mesh/hm, and increase it to a 4096x4096 mesh/hm WITHOUT stretching my current heightmap to fit the new size, keeping my current terrain in the center perhaps. That way I can simply ADD to my terrain without screwing up what I already have? I tried looking around, I may just be searching using the wrong keywords..
I could try exporting the current 1024 hm I have now as a BMP and throwing it into a 4096 and reimporting that BMP into L3DT as a heightfield, but I'm thinking that will lead to the terrain being misconstrued in some way, stepping etc. There's probably already a way to do this and it's sitting here right in front of me..