Reloading Saved Flights using System Time?

Does anyone know if and how its possible to reload a previously saved flight (.flt) and have it use your current SYSTEM time of day instead of the time of day that was originally saved with the flight?I know if you make it your DEFAULT startup flight, it WILL use the system time...but i dont want to make this particular flight my default, however i DO want it to load with current time of day....is there anyway i can manually edit the .flt file so itll do this for me?Thanks :-)Dave