Can I edit a recorded drive?

Unfortunately, there's no way to edit a recorded drive!  You'll need to delete the incorrectly recorded drive, and then manually add in the drive with the appropriate mileage.

First, delete the old incorrect drive:

1) Click on the word "deductions" near the upper left of the home screen ->

2) Select the incorrectly recorded drive ->

3) Tap Edit ->

4) Tap Delete in the menu in the upper righthand corner

Then manually add the correct drive

1) Click on the green "add" button on the homescreen ->

2) Select "Add an expense" ->

3) Select "Add miles manually" ->

3) Enter your actual mileage distance, date, and any notes

4) Tap Save

After you follow these steps you'll be up to date with the correct mileage!