Thanks for providing more details, @dave117.
Let's perform some steps to make sure your trips will sync to QuickBooks Online (QBO). First off, let's ensure your phone's location permission is set to "Always". Also, for the most accurate trip tracking, you'll have to enable Motion and Fitness permission.
If these permissions were already allowed but your trips weren't still syncing, you can manually add them so you can track it again in QBO. Check out this awesome article for more details: How to track mileage in QBO?.
Moreover, you can manually track your mileage in QBO for multiple vehicles. Please refer to this article for additional insights: How to manually track mileage in QBO?.
Hit the Reply button if you still need help with managing your trips in QBO. I'm here to ensure you achieve your goals. Stay safe, @dave117.