Hi Mike,
You can import EANs with the standard WooCommerce product import tool (in “Products > All Products > Import”). Your CSV file should look similar to this (1975
, 1976
, 1977
, and 1978
are all variation IDs):
ID,EAN
1975,2000000019758
1976,2000000019765
1977,2000000019772
1978,2000000019789
* Although you can name the column differently and then map it manually, I suggest naming it EAN
so it would be mapped automatically.
** When importing, you need to check the “Existing products that match by ID or SKU will be updated” checkbox. And as you can see, you can also use SKU instead of product ID.
Please give it a try and let me know what you think.