Multistore - 2 groups, 3 stores - products available for all stores in 1 group

[morawcik]

Hi.

I add multistore with those stores:

• group 1: store 1
• group 2: store 2
• group 2: store 3

Both groups has different main category. Store 2 and store 3 are the same but for different domains and languages and now i want to add products for both stores without duplicate. What I see now that opening "group 2" products i see products from group 1, in store 2 and store 3 i have no products currently and when i'm trying add product in one of them then it's not available in second one. When i'm trying add product for group 2 then i got error that i have to change to one store or "all stores". What i'm doing wrong?