Hi Shera,
Q3D: In the analysis setup, check the Capacitance/Conductance box. This is necessary for the s-parameter export.
Sonnet: after viewing the s-parameter file, you will see that right-axis is empty (as also indicated in the left part of the pic). Right-click on it and then add equation curve. Then select either Inductance1,2,3, and set the axis to right if you want to see both the orig plot and the new one. set the axis to left if you want to replace the current plot with the new one.