All product attributes showing as N/A

Hello,

I have the PRO version of the plugin and I have a problem synchronizing the product attributes with the attributes for comparison. The fields are duplicated (I have an empty attribute field for every product attribute) but I haven’t been able to synchronize both values.

My DB is quite big, so the option of filling again the attributes is not an option.

I have already read this topic posted in this forum but in some case the answer was not provided and in another the answer was not clear to me.

How can I synchronize my product attributes with those in the comparison table?

Thanks in advance.

http://wordpress.org/plugins/woocommerce-compare-products/