Migrating V5 Fillet Surfaces

	This task shows you when the Surface direction is maintained between CATIA V5 and CATIA V4, when saving a V5 Part into a V4 Model.
	What do you obtain if you want to migrate a V5 Fillet into a V4 Fillet: if the V5 Fillet is built on a Torus Surface, the Fillet will be converted into a V4 Torus, if the V5 Fillet is built on a Cylinder Surface, the Fillet will be converted into a V4 Cylinder,
	if the V5 Fillet is built on a Generic Surface, the Fillet will be converted into a V4 Fillet with a centrifugal normal.
	Here is an example of two Fillet Surfaces in V4, you can see that the normal is centrifugal at the transversal curve: