Let me guide you in adding a transaction from another company to QuickBooks Online (QBO) so it shows up on your Profit and Loss report, LindaETC.
You can create a petty cash or any holding account and then record the income transaction as a Bank Deposit.
Alternatively, you can consider creating a Journal entry and credit the income account. For accurate accounting, consider consulting an accountant for guidance.
Furthermore, you can check out this article to learn how to review downloaded bank and credit card transactions in QBO: Categorize online bank transactions in QuickBooks Online.
Feel free to click reply if you have any other reports or QuickBooks-related concerns. Stay safe.