Bug 75954 Changing anything on Launcher blows away JUnit Test Method
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/launcher/JUnitMainTab.java
fContainerText.setText(""); 
		setTestMethodLabel(fOriginalTestMethodName);
	}
	private void setTestMethodLabel(String testMethodName) {
		if (!"".equals(testMethodName)) { 
			fTestMethodLabel.setText(JUnitMessages.getString("JUnitMainTab.label.method")+fOriginalTestMethodName); 
		} else {
			fTestMethodLabel.setText(""); 
		}
	}
	protected void updateTestContainerFromConfig(ILaunchConfiguration config) {
		String containerHandle= ""; 
		try {
			containerHandle = config.getAttribute(JUnitBaseLaunchConfiguration.LAUNCH_CONTAINER_ATTR, ""); 
			if (containerHandle.length() > 0) {
				fContainerElement= JavaCore.create(containerHandle);
			}
		} catch (CoreException ce) {			
		}
		fTestContainerRadioButton.setSelection(true);
		setEnableSingleTestGroup(false);
		setEnableContainerTestGroup(true);				
		fTestRadioButton.setSelection(false);
		if (fContainerElement != null)
			fContainerText.setText(getPresentationName(fContainerElement));
		fTestText.setText(""); 
	}
	/**
	 * @see ILaunchConfigurationTab#performApply(ILaunchConfigurationWorkingCopy)
	 */