How can I update the mileage when I need to adjust the address in the mileage tracker?

You came to the right place for QuickBooks help, @judiesposito-gma.,

I can share the steps for you to edit your mileage location in QuickBooks. Follow the steps below:

1. Go to the Mileage or Trips menu​.
2. Find the trip.
3. Select Business or Personal for the type.
4. Select the vehicle you used.
5. Review the details.
6. If you need to edit the location or distance, select More ▼ and then Edit. Make your changes and then select Save.

If the mileage isn't updated after changing the address, you can always add trips manually. These are the steps to enter mileage:

1. Sign in to QuickBooks Online in a web browser.
2. Go to the Mileage or Trips menu​.
3. Select Add Trip.
4. Add the trip date, starting and ending locations, distance, and the purpose.
5. Select Save.

If you need further help with mileage tracking, please post here again. I'll be more than happy to help you.