WPML & Marketpress Multishop: products show up double or trilple in global shop


I have a marketpress multishop with products in local shops that are displayed in a global shop. I also installed WPML multilanguage plugin. When I translate products in local shops, they show up in all languages in the global shop.

Furthermore, when I set a local shop to a maximum of 1 product, I cannot translate that product because marketpress sees the translation as an extra product.

Are these known problems with the combination of the two plugins?
More important... can you help me solve the problems?

Kind regards,