Thanks everyone. Lofted flange didn't quite replicate the geometry, but I did find another work around I'll share in case someone runs across this thread with a similar situation:
1. In Modeling, "Extract Geometry" and selected the inner Face
2. "Thicken", selected the extracted face and...
I have several conical pieces of sheet metal (created in Modeling, then Converted to Sheet Metal) which either do not successfully calculate when doing a Flat Pattern or if they do, it creates a strange flat loop...
Anyone have an idea of what may be going on? I've done the "clean up" tool and...