I understand that you may need to make changes to the trip, Bullseye001.

Once a trip is approved in QuickBooks Desktop (QBDT), it cannot be modified. This means that any changes to the trip details, such as the date, starting and ending locations, distance, and purpose, cannot be made once the trip has been approved. 

It's important to note that when you directly enter mileage in QBDT, it is automatically approved. Therefore, it is recommended to review and verify all trip details before approving them.

If you need to make changes to the trip, a workaround is available. You can switch back to the Basic Mode for Tracking Mileage and manually put in the transactions from there again. To switch back to the basic version, follow these steps: 

1. Go to Edit and select Preferences, then select Time & Expenses
2. Select Company Preferences and then select the Basic version. 

However, please note that if you switch back to the basic version, you won’t be able to copy any data from the advanced version of track mileage to the basic version. Therefore, it is recommended that you secure a copy of the data from the advanced version before reverting to the basic version to have a backup. 

For more information about mileage tracking and how it can benefit your business in QBDT, check out this article: Set up mileage tracking in QuickBooks Desktop

You can also view this informative video resource about how to track mileage in QBDT for your future reference: How to track mileage in QuickBooks Desktop

If you have any further questions about mileage in QBDT, feel free to reach out to us anytime. The Community is available to assist you anytime. Best regards.