Hi there, Jonny. Allow me to share some steps to ensure accurate transaction records in QuickBooks Online (QBO).
You've possibly selected an income account when you created the Products & Services (Freight) item that's why it shows as an income when you do a project P&L. Therefore, you'll need to review the account used for that item (Freight) and change it to an expense account if it's income. You can follow the steps below:
Additionally, you can refer to this article for complete guidance: Change the account for a product or service item in QuickBooks Online.
Moreover, you can create a trip service item and choose the appropriate account to reflect it as an expense or income. If you want to show it as an expense, you can select an expense account, and if you want to show it as income, you can select an income account.
However, if you're unsure about which account to use, it's best to consult your accountant for guidance. If you don't have one, you can refer to these articles:
Furthermore, you can check out this article to learn how to organize your products and services in QBO: Group products and services into different categories in QuickBooks Online.
Feel free to reach out again in the Community if you have any further concerns. We're here to lend a hand. Keep safe.