Problem with copy product

Hello,
Very nice plugin. But I have a strange problem – when I copy a product, change the data in the copy version everything is looking ok but its not because after copy the original data(the first product) is duplicated in the single product page

You can see here http://shop.mandja.com/product/silikonova-forma-slanchogledi/

How can I fix that?

ps. sorry for the bad english

Regards,

Rali

http://ww.wp.xz.cn/plugins/ready-ecommerce/