The scenarios mentioned by one of our Community Champions are most likely the reason why it's recorded as multiple trips, mark131.
Please take note that QBO will based the mileage deduction on the total number of business trips. You just need to make sure that all of them are categorized as business trips so they're taken into account. Just tap on the trip and swipe left to categorize it as business.
You can also check out these articles to make sure that all your trips are capture by the app when driving:
Reach out to us again of reply below if you need more help with your trips. We'll make sure we get it sorted out for you.