ID 470973 - Copying and pasting polygons doesn't produce the correct vertex normal map.

Problem summary
Copying and pasting polygons doesn't produce the correct vertex normal map.

Customer reported version
modo.14.2v2

Customer reported platform
windows10

Steps to reproduce

1) Open Modo and create a Cube mesh item.
2) Go to the Vertex Maps tab and under Other Maps create a vertex normal map named "Cube"
3) Create a Cylinder mesh and then go to the Vertex Maps tab and under Other Maps create a vertex normal map named "Cylinder".

4) Select all the polygons on the Cube mesh and paste it into a new mesh group, notice the correct "Cube" vertex normal map is present.

5) Select all the polygons on the Cylinder mesh and paste them into a new mesh group, notice that the "Cube" vertex normal map is incorrectly present.

Expected behaviour
The Cylinder mesh should be pasted with the "Cylinder" vertex normal map. 

Actual behaviour
The Cylinder mesh is pasted with the "Cube" normal map.

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:

14.2v2 - Windows 10

14.2v1 - Windows 10

14.1v1 - Windows 10

14.0v1 - Windows 10

13.0v1 - Windows 10

12.2v2 - Windows 10

Earliest version tested

12.2v2 - This issue appears to be in all versions of the product.