I really don’t think we are talking about the same thing . In the reclearance procedure basically you file an enroute airport as if its your intended destination ( with some reduced contingency with respect to your actual intended destination) . When approaching that airport you make an assessment on whether you can reach your actual intended airport with the remaining fuel left + normal contingency + diversion and FRF. If you can you ask from ATC reclearance to proceed to your intended . As I understand the controller is not really informed of what your actual intended destination is .