Baking normals in blender render is ignoring bump mapping. (2.77)

I’ve been struggling with this for two days now.

The setup:

  • A high poly model which also has a bunch of materials with their own bump maps, all blended with nodes.
  • I use blender render.
  • Blender version2.77

What happens:

  • When baking a “complete map” everything is working as expected, all the materials are laid on top of eachothers.
  • When baking a “normal map” blender appears to completely disregard the bump maps and is delivering to me a flat surface where there should be details.

Anyone has a clue there?