Vray Light Selects on "Full" mode not properly rendering SSS from a Blend material

[AskTheStorybots]

We've got a simple scene with light selects set up. When we render, the beauty pass looks fine, but the light selects misinterpret the SSS material nested in a Blend material as being diffuse, and thus fails to render the SSS effect in the light select passes. Other SSS materials in the scene render correctly.
Is this a known bug? Is there any way to correct this without separating out render layers?

Thanks,

[nikolay.kusht]

What version of V-Ray are you using? Could you send us your test scene for investigation along with some screenshots as an example of the issue?