How do I change a whole list of products from one income account to another without having to do each one manually

Warm welcome, @janie7. I'm here to shed some light on changing a product from one income to another. 

The ability to do this is possible in QuickBooks Online (QBO). However, you'll need to change it manually one by one since QBO doesn't have the feature to do this by batch. I can share some steps on how you can do so. 

1. Go to Sales and select Products and services.
2. Locate the product and click Edit.
3. From the Income account dropdown, select the account you want to use.
4. Select Save and close.

You can refer to this article for further information: Change the account for a product or service item in QuickBooks Online.

You can check out these articles to learn more about managing inventory in QuickBooks Online: 

• Inventory management
• Use reports to see your sales and inventory status.

Don't forget to reply to this post if you have further concerns about changing the income account for a product in QBO. I'm always here ready to assist you.