@Boldline Spot colors should always show up on plates at full opacity, unless the user changed the opacity of the object or used the spot color in a gradient.
VS can import and use spot colors like this: https://recordit.co/YvSK8MRtio
@vectoradmin I don't know if you can define any color as a spot color, but if VS can do this, then objects in that (new) spot color should show on a separate plate, and in opaque black (100% like BL explained above), not 50, 32 or 87.