OK, all I can find in a search of the forums is complaining about the database, so add my voice to theirs.
I just added 6 months of data into the "new" database after discovering that all the data I entered into the old database recently is gone. On the last entry I flipfloped the miles and the gallons, getting something like. .02 mpg as a result. Then I can't find the edit button. Apparently there isn't one.
I guess I could totally delete the car from the database and start over, but why bother. So, I guess I'm just more bad data