Boundary Surface and Guide Curve

When I use boundary surface with guide curves the resultingsurface extends for the the length of the guide curve intead ofjust the area between the bounding edges. The only way I can getaround this problem at the moment is to split the guide curve atthe boudary. If the guide curve is the edge of a surface I guessyou have to split the surface. This seems messy. Can eanyonesuggest a better way to achieve this.SolidworksSurfacing