Sheet Metal Loft - double bend lines?????

Hi Guys

I have created a simple sheet metal chute using the sheet metal loft feature but when I flatten it or create a drawing of the flat pattern, I have double bend lines showing for each bend. I expected to see only 1 bend line!

Has anyone any info on this, I have attached the part, maybe I am doing something wrong????

Cheers Dee

SolidworksSheet Metal