Resetting clears all collected data for that test and effectively starts it again from zero. The test setup (variants, goals, targeting) stays the same.
Steps:
Open Experiments (or your A/B tests list).
Find the running test you want to reset.
On that row, click the ⋮ (more options) menu.
Choose Restart test.
In the confirmation dialog, confirm that you want to reset the test data.
After you confirm, all existing visitors and conversions for that test are removed and the test continues running with a fresh start. This cannot be undone.
Note: “Restart test” is only available for running tests from the main Experiments list, not from the Deploy view.