This thread is resolved. Here is a description of the problem and solution.
Problem:
You are trying to import products in two languages (EN and DE) using the built-in importer. Initially, both language versions display correctly. However, after updating the EN product, the DE product attributes like size and color are no longer displayed in the webshop.
Solution:
We have identified that this behavior is expected due to the limitations in WPML's handling of attribute translations. In WPML, attribute names themselves cannot be translated, only their labels can be. These labels are what you see on the frontend, provided by the theme. Unfortunately, the attribute names included in the export CSV file are not translatable. If you're experiencing this issue, we recommend checking the known issues page and verifying that you have the latest versions of themes and plugins installed.
If this solution does not apply to your case, or if it seems outdated, please do not hesitate to open a new support ticket. We highly recommend visiting the WPML support forum for further assistance.
This is the technical support forum for WPML - the multilingual WordPress plugin.
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