Rates not getting recalculated when clicking on Before You Enroll - Continue

Summary:

I have defined a Rate Value Calculation fast formula which is calculating rate based on the field "Statutory Dependent" field stored for each dependent. Based on the dependents who have this field as "yes", the rate value calculates the amount and displays on the screen. This formula is attached to the standard rate as "Calculate for enrollment formula"

Now when the employee goes to Before You Enroll - Continue then he is able to see the correct amount based on the initial values of the "Statutory Dependent" field for each dependent. But now if the employee wants, he can go and set this field to "No" for some of the dependents. But when he changes the field and goes to Before You Enroll - Continue then the rate is not getting recalculated. Please let me know to recalculate the rates.