2) Place a text input as the first element in the displayed sreen's first section. Now make this TextInput invisible with some condition and Check the "Reserve space when hidden" checkbox so that this element gets loaded in DOM.
Now in this Text inputs Actions Tab add an focus event and to this event configure "Refresh Harness" action.
So whenever your section gets loaded the Harness will be refreshed but as your harness is getting refreshed and the same section would get loaded every time and the TextInput will get focus and hence again there would be a Refresh Harness again. So it would become indefinite action.
So configure this action based on some condition as below.
Now in the same action set configure another Action(in the below case running DataTransform) which would set the above property to true
DataTransform would look like below
Now the Harness would be refreshed once and on the second load as the condition is false "Refresh Harness" will not be triggered.