Combine order settlement to child orders

Dears

We are doing the combine order settlement to the individual child orders (3 nos.).

We have now material consumption at the combined order booked through a primary cost element.

During the settlement, this material consumption has been settled to the individual child orders.

After the settlement, it is seen that only CO document is generated and no FI document is generated.

Because of this, the original material consumption is still at Combined order level.

I am afraid this will distort the FI reporting based on the orders.

Is this the standard behaviour in the combined order settlement ? or we are missing something ?