Different Units of measure on product variants.
Is there a way to set different UoM on product variants. Say, I have a product "Wine". I want to set the variant attribute "Volume", which is the volume of the bottling (0,75l, 0,2l, 2l). And I sell this by the unit (bottle). But I also sell this wine in bulk (so the size attribute for this variant would be "Bulk"). But for this variant I need the Volume UoM (litre).
I've activated both UoM and product variants. But when I change the UoM for one variant, it is automatically changed for the whole product group.