Import maya file with AOVs

[sermed_darah]

Hello!

Part of our pipeline was to import a preset of VRay RenderElements as a maya file (mb or ma). It worked perfectly fine with VRay 4 (next), but does not work with the recent 5.10.x.
Is it a feature or a bug?

P.S. openning the file with AOVs works perfectly fine, but importing does just nothing at all

[hermit.crab]

Sounds similar to this thread here. Refer to it for an answer and workaround.