SOAPUI import test suite from command line

I've created an xml test suite file and uploaded this to a project via the SOAPUI GUI.

However, I want to be able to perform the test suite upload from the command line instead of the GUI.

So far the only action I have been able to perform via the command line is to invoke the testrunner.bat file to submit requests via the command line.

Below is the option selected via the GUI:

ImportingTestSuiteViaSOAPUI_GUI_rightclickonproject