UV unwrap: separate maps for separate faces problem The problem is:
I have 1 mesh.
I want some faces of the mesh to be in one map (faces A) and other faces of the mesh in another map (faces B).
Now when I unwrap faces A, there is no problem, I get a UV map only with these faces.
When I unwrap faces B to a new UV map, there is faces B and faces A on that map. While on the first map there is only faces A.

Is there a possibility to only get faces B on the second map or can I just move the faces A away?

EDIT:


In the file there is a plane. I first picked some vertices and unwrapped them with U -> Unwrap leading to UVmap1.
Afterwards I picked some other vertices, created a new UV map with the + and then unwrapped them. Now if you select all and switch between the maps you will see that UV map 1 contains only the first vertices and uv map 2 contains the first and the second ones.
Yes you can have separate textures for separate faces. 

One technique is to scale the vertices of unwanted faces by zero to the median point. Scale 0.  The area of the faces are now zero. Zero area signals no mapping is attempted.  I hope the single dot on the uv map is acceptable to you.

 


mark seams so as to partition faces into group A and group B


First UV Slot


uv unwrap case 1 and move unwanted faces to the side of uv map. The texture repeat must be set to [clip].


Second UV slot


uv unwrap case 2 and move unwanted faces to the side of uv map. The texture repeat must be set to [clip].
The combination of faces of the uv map and repeat set to [clip] should achieve your goal


Keep in mind advanced users may be able to simply use one uv map with texture painting.  You are the advanced user.