Family table config setting

When I changed the config option "Save instance accelerator" to "Always" users were unable to save assemblies containing family table instances. I changed the config setting back to "None" and the problem went away. However we need the "Always" setting in order for 3D PDF creation with Tetra4D to work.

Does anybody know what stops assemblies with family table instance from saving if the config option "Save instance accelerator" is set to "Always"?

Version Creo 3 m120

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