The Connectr app replicates the parent-child relationship from Amazon while pulling products into Shopify.
Note: The variants cannot be pulled as separate products.
If you change the relationship and separate products from child elements of the parent, the connection between the products and Amazon gets lost which might lead to some unexpected errors while syncing the product. We strongly recommend you maintain the parent-child relationship.
However, if you want to list variants as separate products, the only way is to have each Amazon variant as a separate product on Shopify by creating as a standalone product manually. And then use the Connectr app to link it to Amazon. We do not recommend this method.