FBX Exporter not exporting UV4, 5, 6, 7

FBX exporter currently doesn't export UV channels bigger than UV3.
A fix is quite easy, I just had to change a code in exporter package.

Code (CSharp):

1.         /// <summary>
2.         /// Unity has up to 4 uv sets per mesh. Export all the ones that exist.
3.         /// </summary>
4.         /// <param name="fbxMesh">Fbx mesh.</param>
5.         /// <param name="mesh">Mesh.</param>
6.         /// <param name="unmergedTriangles">Unmerged triangles.</param>
7.         private static bool ExportUVs(FbxMesh fbxMesh, MeshInfo mesh, int[] unmergedTriangles)
8.         {
9.             Vector2[][] uvs = new Vector2[][] {
10.                 mesh.UV,
11.                 mesh.mesh.uv2,
12.                 mesh.mesh.uv3,
13.                 mesh.mesh.uv4,
14.                 mesh.mesh.uv5,
15.                 mesh.mesh.uv6,
16.                 mesh.mesh.uv7
17.             };

If you look at a comments for a code, you will notice that it says that it only exports first 4 channels because Unity supports only 4 channels. Unity internally supports up to 8 channels, so a code in a package should be changed to reflect this.
Here comes another problem: even if Unity internally supports more than 4 uv sets (when a mesh is generated procedurally) it's FBX importer can't import other than 4 UV channels. This is an extremely limiting factor in some cases.