being deformed I design these things as you did (inventor or solidedge does not count) and then I develop to the supplier. I don't exclude it but I don't know how worth it.
the "lamiera" environment is intended for parts obtained by fold in the air by means of a feeder; therefore developments are carried out through the calculation given by "folding table" or "k factor" or linear method with formula.
no, it is not developable, on the other hand it is easily realized with a edger, starting from a calandrate ring.
you can develop this, but regarding retreats and other deformations, feel the supplier