Sheet Metal Edge Flange on Lofted Bend

Hey All,

I'm working on a sheet metal part that's based off a lofted bend. I have Edge Flanges coming off the top of the part. The issue is that every time I update the dimensions of the Lofted part, the top edge and face change and break the link to the Edge Flange feature. The top edge of the part is also at an angle due to the forming. Any advice would be greatly appreciated! The edge in question is shown below. 

SolidworksSheet Metal