Whenever you open a test report, VWO fetches the up to date conversion and visitor data, runs Bayesian SmartStats on that data, and generates a report for the test where all metrics are up to date. Since a running test is continuously getting more visitors and conversions every second, you can also refresh the test data. You can click on the Refresh data button and VWO will fetch the updated stats for this test. Hovering on the refresh icon also shows you when your data was last updated.