You might be facing this problem because, you have probably not updated your "My Products list" in Unify Enterprise. to do this, please follow the below steps:
Step :1 Click on the "Products" tab in Unify Enterprise, and then go to My Products.
Step :2 Click on Get Products. This will refresh and re-download your products from your accounting software and from your eCommerce platform.
Step :3 As soon as the products list finishes refreshing itself, it will give you the prompt as below. Click on Ok and check, your deleted products should have disappeared!