As of GraphQL API version 2025-10, we are expanding the ProductVariantsBulkCreateStrategy, used as an optional argument in the productVariantsBulkCreate mutation, with a new PRESERVE_STANDALONE_VARIANT value.
The new strategy preserves the existing standalone variant, whether it is the default or a custom variant, when calling productVariantsBulkCreate mutation.
For more detailed information and examples, visit our productVariantsBulkCreate documentation on Shopify.dev.