Parametric sweep plot not updating in HFSS

When creating a plot that displays data from a parametric sweep after the sweep has run, it does not show all the families of curves.

This issue is caused by the fields in the parametric setup not being saved. To resolve it, enable the "Save Fields and Mesh" option in the "Setup Sweep Analysis" window. Access this by double-clicking on ParametricSetup1 and selecting the Options Tab.

If the fields are not saved and a plot is created before running the model, there will not be any data available other than the prepopulated quantity. HFSS will populate the report, but it will not generate additional results.