Look no further, @DWolfe07.

As my colleagues discussed above, you have the option to change the product/service on the invoice item without deleting other information. However, if the item contains a different description/rate, it will update when you change the product. For your reference in managing your items in QuickBooks, please visit this article: Change product and service item types in QuickBooks Online. 

Also, I've added this great article to help you change the appearance and layout of your sales forms like invoices, estimates, and sales receipts, head to customize the sales form at this link for the detailed instructions. 

Feel free to post here again if you have questions about changing products/services in your invoices. I'm always here to help. Have a good one.