When remote powershell session is created for the first time, then the session is cached locally at %APPDATA%\Microsoft\Exchange\RemotePowerShell, ...

When remote powershell session is created for the first time, then the session is cached            locally at %APPDATA%\Microsoft\Exchange
emotePowerShell, so that we can use the cache            from next remote powershell connections.            Use of this switch will clear the cache before creating a new remote powershell session            Default: false