I accidentally swiped right on a trip, which marked it as personal, then it gave me like two seconds to undo it. how do I undo that?

You can still edit the reviewed mileage, mitchskillman.

Here's how:

1. Tap Mileage on the menu.
2. Select the Reviewed tab.
3. Locate and open the trip.
4. Select Edit.
5. Make your changes and then select Save.

You can check out this article for more information: Automatically track mileage in QuickBooks Self-Employed.

Stay in touch with me if you have other concerns.