stockable variants -> cart

[ddude]

hey,

not sure if it's a bug or if it was planned and coded that way.
But having a product with stockable variants (which seems to be the only way to acchieve what I need) everything works fine with the first porduct added to the cart.
But as soon a second one (same product, different variation) the first one gets changed to the new one instead of added.

Joomla 2.5.6 and VM 2.0.8e fresh installation, no template mods, simple beez2

Small example:
Trousers have colors and sizes.
Not all colors are available in all sizes and they have different prices
So I need stockable variants to create all the possible combinations .. unless someone has a better solution.
Customer choses a red color and size L and puts that to cart ... working good.
Customer chooses green color and size S and puts it to the cart ... red trouser size L is gone and only green trouser size S in cart.

Anyone knows if it's a bug?
Or where to find the code that identifies the product when adding it to the cart?
Imho it'd work to simply use the ids of the child products instead of the parent one to solve that issue.

Thanks a lot!

[ddude]

well .. I deleted all child products and set them all new .. now they are working. Don't ask why...