IE3D overwriting problem.How does one bypass it?

Hi

When you simulate for dB vs freq to get return loss ,you get a graph.Now at the resonances if you want to check the radiation pattern,the saved s -parameters will be over written.
How do you avoid this?I cannot afford to select radiation pattern also along with s parameters and simulate.It takes more time! Please help.

Thanks

You just save the file into another one and simulated it at the frequency you want to have pattern.