Thanks for the quick reply!
All products are 'simple' product types. For example, we sell bottles.
1 brown bottle, sku 5839485
1 brown bottle case (12 units of brown bottles), sku 5839485case
The two above items are 2 separate simple products setup in woo.
We also sell bundles, which would be a similar issue, only it has multiple products contained in it. They are setup as simple products now, and for example:
1 brown bottle, sku 5839485
1 white bottle, sku 485956
1 Brown & White Bottle Bundle, sku 5839485bundle
Perhaps there is a better way to setup these products so ATUM knows what they are?