Are you sure you have advanced the FMS to the next waypoint "field" as in step 11? This MUST be done PRIOR to going back to step 6. Otherwise you will be "editing" the "highlighted" (previous) waypoint. Jim yes the field below entered waypoint gets highlighted then turn small knob which bring up entry popup , i would press INTI the previous waypoint in background disappears. What is INTI? that was my problem