As a result of peculiarities of Shopify features, it sets boundaries for product variants. So, It isn't allowed emigrate each product with over 99 variants and three attributes from PrestaShop to Shopify. Keep Your Browser Open: It’s essential to preserve your World-wide-web browser window open through the migration process making https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html