HFSS help: Can't reproduce graph although I copied the same project

Hi,

I did a simulation and manage to get the graph i need. However, I cannot reproduce it, although I copy-paste the whole model without changing anything and re-analyse it.

Please help!

Did it converge the first time you ran it?

Yes it did.
The result can be produced if I redo the design in a new project.
But it will takes a lot of time if I need to redesign everytime I change a small parameter

Normally when i cut and paste objects it does not keep the boundary settings. After you paste the model check to make sure all the boundary settings are correct.