Rong Liu
Ansys Employee

Hi, Tom, 

You want to have Show Dielectrics checked, then turn on only one layer one by one to find out which layer has the outline with a hole in HFSS 3D layout. The Outline layer in HFSS 3D layout won't be transferred to HFSS. What you see might be a dielectric layer.  

Please feel free to open a support case. This links shows how.



Best regards,