Ok, I'll try to explain it better with more images:
1. I did this simple model in the Sculpt room I divided each part on a different VoxTree
2. Than I Decimate all the parts in a smaller polycount and then imported each piece for the baking; I baked with "Bake w/ normal map (per-Pixel) with also corrisponding name for baking.
3. Now if i turn off the Voxel ecc. I have the object like this, that means it is baked i think.
The difference between my result and the one I attached in the previous post is that I only have "layer 0" and "layer 1" instead of having the ambinet occlusion, the normal map and also each of my piece.
This is what I'm not understanding.
Maybe this thing is kinda silly, but since I'm new I'm finding a difficult here.