Thanks sh. I did try it today with a large enough triangle to check this out, and sure enough the progress page only showed the direct distance to first waypoint followed by total distance of all subsquent waypoints. However the VNAV path calculations did take the extra track miles into the equation by creating a phantom waypoint at the intersection of the actual heading and the intercept of the track. This is great for getting a more acurate indication from the vertical deveation indicator on the EHSI. I must check the distance to run at L2R on the descent page next time and see if that shows direct distance to next waypoint or total track miles via the intercept point.
Cheers mang.