Your confusion ends here, @Doreen9159.

The possible reason why your invoices are associated with Cost of Goods Sold (COGS) is that you have COGS as an expense account and then created the invoice. That said, it won't change the account when changing the items to the invoice transaction and causing a negative amount on your profit and loss report. To get this fixed, you'll want to delete and recreate the invoices to allocate the correct account. Here's how:

1. Find and open each of the invoices you want to update.
2. Click More, then select Delete.
3. Select Yes to confirm.
4. Once done, recreate the invoice with the updated item.

You might want to check out this article to learn more about the impacts of inventory tracking on balance sheet and profit & loss reports.

Please let me know if you need clarification about this, or there's anything else I can do for you. I'll be standing by for your response. Have a great day.