Problem: The client is experiencing an issue where existing translations, which were supposed to open in the Classic Translation Editor (CTE) as per their settings, are instead opening in the Advanced Translation Editor (ATE), potentially overwriting their existing translations.
Solution: We investigated the database and found that the products were created using the WordPress editor, not the CTE. This is why when attempting to edit translations, it defaults to the ATE.
To resolve the issue, if you switch the settings to use the Classic Editor for new translations, you will be able to use the CTE for products that were originally translated using the WordPress editor.
If this solution does not seem relevant to your situation, please do not hesitate to open a new support ticket with us.