This thread is resolved. Here is a description of the problem and solution.
Problem:
You need to synchronize 60,000 products and find that doing it through the UI is too slow.
Solution:
We currently do not have an out-of-the-box feature for synchronizing such a large number of products via CLI or database. However, you can develop a custom solution. We recommend using the
wpml_sync_all_custom_fields
hook, which you can find more about here: https://wpml.org/wpml-hook/wpml_sync_all_custom_fields/.
Additionally, you might find it useful to refer to a similar case where custom code was used for product data synchronization. Details can be found in this forum topic: https://wpml.org/forums/topic/sync-product-data-from-code/.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. Should you need further assistance, please do not hesitate to open a new support ticket at WPML support forum.
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This topic is split from https://wpml.org/forums/topic/wpml-wpml-wp-all-import-wpml-addon/