I've just installed Gaea Production 1.3.1.9 and it looks like the Range Remapped function is broken in this version.
I output .exrs to Terragen, so I use the Remapped range and set it the Terrain Definition height (default 2600)
I've tested with a simple radial Gradient node (which will output a max value at the Terrain definition height - 2600 in the exr) and I set Range to Remapped - Min: 0 Max: 2600
This works fine in Gaea 1.3.1.7 but in 1.3.1.9 the tiled build gives me a max value of 6759951. A normal build works as expected.