Problem: The client is facing an issue with duplicated WooCommerce attributes in different languages on a WPML-stabilized site. They want to consolidate these attributes without breaking products, filters, SEO, or using destructive SQL. Solution: We recommend checking if the duplicated attributes appear at Products > Attributes in the WooCommerce section. Here, WooCommerce should only display attributes created in the site’s default language, as this is the canonical source. Translations are managed through WPML’s Taxonomy Translation interface, not listed as separate attributes. It's important not to merge translated taxonomy slugs back into one, as this would disrupt language-specific filtering and URLs. Instead, ensure attributes are registered once in the default language and then translated via WPML’s taxonomy translation. This approach maintains functionality for products, filters, and SEO. If duplicate attributes in other languages appear as separate entries in the admin list (e.g., 'Destinos', 'Duración'), these might have been manually added and are not linked to the originals in WPML’s translation tables. In such cases, deleting these manual entries at Products > Attributes is advisable.
If this solution does not apply to your case, or if it seems outdated, we highly recommend opening a new support ticket. Also, check related known issues at https://wpml.org/known-issues/, verify the version of the permanent fix, and confirm that you have installed the latest versions of themes and plugins. For further assistance, please visit our support forum at WPML Support Forum.
