This feature is not yet available.
If a language is disabled, you cannot query content in that language in the GraphQL API. No results are returned, and the locale parameter will not override this.
To enable support for querying in that language again, go to the Optimizely Content Management System (CMS) Admin view > Config > Manage Website Languages. Enabled languages are available for editors to create content in that language, and can query content. When done, you can query the content again, and content that was previously ingested is still present.
Select or deselect Enabled for the desired language, and click Save.
Updated 6 months ago