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This thread is resolved. Here is a description of the problem and solution.

Problem:
You are experiencing issues setting languages for existing post categories after migrating from Polylang to WPML. Specifically, you encounter an error 'Category not updated' and notice that a duplicate category with a different URL is created.
Solution:
The root of the problem was that the original language for the category was set as Dutch (nl) in the database, and the Swedish and Norwegian blog categories were translations of this Dutch category, all sharing the same Translation ID (TRID). English had a different TRID, which caused the issue. We resolved this by changing the English category's TRID to match the others, linking all relevant categories correctly. If you have other categories that need similar adjustments, we recommend checking the TRID settings in your database.

If this solution does not apply to your case, or if it seems outdated, please visit our known issues page and verify that you have installed the latest versions of themes and plugins. If the problem persists, we highly recommend opening a new support ticket at our support forum.

This is the technical support forum for WPML - the multilingual WordPress plugin.

Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.

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This topic contains 14 replies, has 0 voices.

Last updated by henrikD-8 1 month, 2 weeks ago.

Assisted by: Lauren.

Author Posts
June 30, 2025 at 9:08 am #17182175

henrikD-8

Clearing the cache and site data fixed it!

Thanks a lot for all the help 🙂