Warnings when trying to create cut lines with split body/face

[slaughlin79]

I need to create some cut lines in a boat hull ive designed so it can flat patterned with exactflat and not having any success in doing so. I marked up the screenshot so ill explain what each color represents but its kinda obvious.                       Green Segmented lines are break lines or lines that will bent in a press break.                                                                           Orange lines is just outlining the part                                                                                                                                                   Red lines are the cut lines                                                                                                                                                                Ive tried using the body next to it as the cutting tool and i also tried creating an axis through two points and then a plane on angle on the two small straight lines at transom and all instances i get computation failure or failed to compute or something very similar. Am i doing something wrong or can it not be done? thanks

[slaughlin79]

Okay well I got what I wanted to do to work but can’t get it to do it again. When you stick lofts together the the edges between two lofts turn green but I did something that made the line turn from a solid green strip to a green and red dotted line. I accidentally went back in my timeline and deleted it somehow. Now I can’t figure out how I did it? It’s gotta be something simple.