Terraformer grayscale issue

[Write 9]

Ok, so I've been using Terraformer for awhile and didn't think it was a big issue but now it's starting to annoy me. After terraforming a region I get something like this:

but when I export it as a 16-bit png it turns out like this:

and looks like this after rendering in game:

So as you can see it goes from moutains and hills to no terrain details. Does anyone know why this happens or how I can fix this?

Through some trial and error I found if I raise the terrain by around 1930, it'll turn out right in-game

this becomes this:

which eventually becomes this:

[joshriddle 29]

Try exporting as a SC4M file, run it in Mapper, and then it should work.