I'm writing a script to exchange a rendering component with a new rendering component, but it should keep all of the same rendering parameters. I followed the documentation to use Get-RenderingParamater to pass the dictionary to the new component, but I'm getting that it is not recognized as a cmdlet.
This feature was added in SPE 5.1. If you install that version or newer the command should be available.
Read more about it in the pull request here https://github.com/SitecorePowerShell/Console/pull/1074