Problem after migration (products, customers, orders) Woocommerce

The programmer had to migrate products, customers, orders from the old store (woocommerce) to the new one (woocommerce).

The problem was so complex that there is a plug-in responsible for translations - Polylang

After the migration, some of the products with existing translation versions were not paired with each other (when I wanted to click from the Polish version to the English version and vice versa it directed to the home page). In addition, baselinker began to synchronize and thus began to duplicate some products.

Now you need to in the database:

- pin these products, make sure that the correct products remain in the orders (so that it is not so that the parts that are duplicated and are in the orders will suddenly disappear from the orders)

- improve this integration, so that the translations fully work and the products are paired

The store is running all the time, so you need to do it carefully and upload a proven fix that will not dump other things.