I appreciate you bringing this matter to our attention, @sales-creeksidefab. To solve the issue, please check if you have changed to a different template, this could be why the SKU and Product/Service columns are missing. If so, switching back to the original template could resolve it.
Also, the Add in the Products service is not for adding specific products to the sales form, this is for adding another line for another product you want to include in the invoice.
Check out this article to discover how to manage product and service items you purchase and sell, without tracking them as inventory: Add product and service to QuickBooks Online.
For further guidance on managing invoices, please consult this article where related help is available: Manage invoices.
Additionally, for customizing and including specific information on your sales form, please refer to this article: Customize invoices.
The QuickBooks Team is here to help with any questions or concerns you may have regarding managing your invoice. Please feel free to contact us for any clarifications or support you require. We're here to assist you.
