Sales order cost estimate

What is the correct procedure steps to do or redo sales order cost estimate?

How does the system determine the amount of the production order goods receipt for make to order product that uses variant configuration?

In variant configuration, the components are selected to make up that production during sales order creation.

I released that the value of the production order goods receipt does not take effect of changes as made in sales order. e.g. value could be $0.01 or wrong value... when different component options are changed