How can I replace DNS and Login credentials in Settings file?

I have saved a settings file that includes Login Macro and Workflow macro using webinspect UI.

Now, this file has to be used as input file during my webinspect execution through command line options.

I need to execute webinspect on a different DNS having different password from what is stored in above mentioned settings file.

What command line options I can use to replace the existing DNS and Login Credentials while executing webinspect