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-- @hope What should these params be set to ?  All ticked on ? --

Hope Edits:

By default, these options will be turned off for full functional use in Houdini.
When exporting to another software for rendering using the volume shaders from the RenderMan Preset Manager, check all of these options on to remove extra attributes used for Houdini and prep the volumes from your simulation for OpenVDB sequence export.

When the Export Prepped Sim Fields parameter is checked on, this will skip generating the diffuse and emission color fields because these fields will be generated in the preset shaders in the other software instead.

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