A CORP JET FLC SELECTED A STORED FLT PLAN THAT HAD PREVIOUSLY BEEN ALTERED; BUT FAILED TO RECOGNIZE THE DISCREPANCY. WHEN THE ACFT DEVIATED FROM THE CLRNC ROUTING; THE CTLR CALLED THE FLC ABOUT THE DEV.

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THIS ACFT HAS AN ADVANCED RNAV CAPABILITY. WE RECEIVED OUR CLRNC FROM PDC AT PHL AND XLOADED TO OUR FMS SYS. HOWEVER; WHEN WE SELECTED THE PLAN; IT WAS ONE THAT HAD BEEN PREVIOUSLY STORED WITH 1 DIFFERENT WAYPOINT. OF COURSE; ON THE NE CORRIDOR IT WAS EXTREMELY BUSY AND WE WERE JUST VISITORS HAVING NOT FLOWN THIS RTE BEFORE. AS WE CROSSED DITCH INTXN; OUR NAV WENT DIRECT TO CYN VOR AND WE SHOULD HAVE JOINED THE AIRWAY AND TURNED ONTO J225 TO JFK; NOT CYN. THE CTLR NOTIFIED US OF THE OVERSHOOT AND WE RELOADED THE CORRECT FLT PLAN. CONTRIBUTING FACTORS TO A CORP PLT ARE RUSH; RUSH. HAD WE BOTH VERIFIED THE RTE POINT-BY-POINT AND NOT JUST THE SUMMARY PAGE; THIS ONE VOR WOULD HAVE BEEN NOTICED. THESE ADVANCED SYS ARE GREAT; HOWEVER; IT SEEMS THEY MAKE THE CREW LAZIER. THE OLD VOR TRACKS KEPT THOSE EYEBALLS SCANNING CONSTANTLY. HERE WE WERE IN A HIGH TFC ENVIRONMENT LETTING THE AUTOPLT AND RNAV DO THE WORK AND FEELING WARM AND COMFORTABLE. FROM NOW ON THESE SHORT RTES NO MATTER HOW INSIGNIFICANT WILL BE TREATED JUST LIKE A NORTH ATLANTIC XING WITH CHKS.