Two of three set pieces I have in my scene do not have cast shadows.
Verge3D for Maya: Shadows — Soft8Soft
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Per-Object Conversion Settings Unreal Engine 4.27 Documentation
Animation Magazine, The News, Business, Technology, and Art of Animation
Object stopped casting shadows with new lights. : r/Maya
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Ask DT: Maya Rendering - How to disable multiple shadows when using the Use Background material
Solved: How to render only the object and its shadow? - Autodesk Community - Maya