This article will help you to distinguish the difference between your Inventory Manager and Selling Manager
The Inventory Manager and Selling Manager are different views of the same inventory data, and they're used to accomplish different tasks.
NOTE: If you sell products with variations (such as color or size), you'll notice that the total count of products found in the Inventory Manager is higher than that of the Selling Manager. This is because the Inventory Manager displays variations of a product as separate rows since stock levels are tracked on each variant, whereas the Selling Manager consolidates variation products into one row.
The Inventory Manager is where you view all the products you stock and sell, and where you manage stock levels and locations within each warehouse.
This view shows variations of a product (such as size and color) as separate rows since stock levels are tracked on each variant. You will not see the parent products since they are just “containers” for the variants and don't hold stock themselves.
On this page, you can see your On Hand, Reserved, and Available inventory for each product, as well as the Warehouses and Bin Locations where the products are stored. You can adjust On Hand inventory and selling prices directly on this page, or you can click on a product to edit every product attribute. You can also open the Bulk Editor to make quick inventory changes in bulk in a spreadsheet-like editor.
The Selling Manager is used to organize your product data in a way that helps you sell. Use the Selling Manager page to see where your products are currently selling and to list products on your sales channels.
Since you'll likely want to list variations of a product (such as size and color) together into one listing, this view shows products with variations consolidated into one row.
Here you will find filters and columns that let you see where you're offering your products for sale and where you've got some work to do. The "is not listed on" filter is a great way to isolate products you still need to list on a particular sales channel.