I need clarification if I'm understanding 3d's configuration correctly.

It's my understanding 3d does not generate a child product option codes. Is that correct?

If it is, how do we track best selling child options (size, color, weight etc)?

How do we assign 3rd party applications and/or promotions to child options if there is no code?

Do I have to manually add child option codes?

Or in the absence of a child option code, does the parent product code pass down to the children when a product is added to the cart?