I set an override for the "major outage" downtime for a component but would like to undo that now and let the "original" downtime show (which is continuing to increase because it concerns an active, ongoing incident):

However, I can't find a way to achieve this in the UI. Neither clearing the time fields in the above screenshot nor setting it to the "original" time makes it return to showing the "original" downtime duration for the component. How can this be achieved?