Good evening, BertP1.
Thanks for reaching out to us here. Id be happy to provide some information.
At this time, there isn't a way to directly import mileage to QuickBooks Desktop. I suggest looking into a third party app for the importation process. I can see how this would be beneficial for you, so I recommend leaving feedback for our developers. These comments are taken into consideration when they design new features and updates for QuickBooks Online. I will also leave this post open for comments from other QuickBooks users to share there experience.
If you have any other questions, feel free to reach back out here.
