The symmPlane argument does not work with all of the feature set in DVGeo.

[anilyil]

Description

To automatically convert a half-body parameterization with a half body FFD into a full body parameterization that also creates a mirrored FFD block, DVGeo has an optional argument called symmPlane. This option enables some functionality to automatically mirror an FFD; however, not all features of this approach works. Specifically, users should be careful about how the reference axes are handled, as well as linking both sides of the FFD volumes.

I do not have a specific example right now, but this capability should be tested and debugged before it is ready for production cases.