Mileage tracking was working fine. All of a sudden it doesn’t track whole trip or only parts of trips?

Hi gordon-lumiblast,

Thanks for reaching out here.  Welcome!  The issue you've described with QuickBooks Online Mileage, has also been reported by other customers.  In this situation, I recommend contacting our Customer Care team outside of Community.  They'll have the ability to verify your account, and get you set up for an email notification when the issue has been resolved.

Schedule a Callback or start a Chat: click (?) Help in the upper right in QuickBooks Online > enter "Contact support" > hit Contact Us > provide a brief summary of your situation > hit Let's Talk > choose Get a callback or Start a Chat.
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If you have any other questions, please feel free to reach back out.  We'd be happy to help!