ID 387770 - Unity Emission map in advanced viewport does not match result in final renders

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Problem summary
Unity Emission map in advanced viewport does not match result in final renders. Either the advanced viewport or the final/preview renderers do not properly blend emission layers.

Customer reported version
modo.12.2v2

Customer reported platform
windows10

Steps to reproduce
1) Open Modo.
2) Open the attached scene.
3) Switch to the Advanced Viewport style.
4) Press "f9" to render the scene/
Result: Emission/Diffuse colors differ between the advanced viewport and final render.

Expected behaviour
Advanced viewport layer blending should mirror the final renderer and preview renderer.

Actual behaviour
The advanced viewport blending of unity emission layers does not mirror the final and preview renderers. 

Workaround
Unknown.

Reproduced by support
This bug has been reproduced in:
13.0v1 - Windows 10, OSX 10.13.5
12.2v2 - Windows 10
12.1v2 - Windows 10
12.0v1 - Windows 10
11.2v3 - Windows 10
11.2v1 - Windows 10
11.1v1 - Windows 10
11.0v3 - Windows 10
10.2v4 - Windows 10, OSX 10.13.5 

Earliest version tested
10.2v4 - Windows 10, OSX 10.13.5  - This issue appears to be in all versions of the product

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