Hi,
hmm, not quite I've to confess. It is possible to wrap
a sketch on that surface. The normal cutout, however, must
be done by switching to the part environment. The SM normal
cutout will not recognize the wrapped sketch. the cut will
prevent, however, the flattening or unbending of that shape.
BTW: there is no need to have the full part as a pic just
a cutout of it that shows the shape with some surrounding
on which to place the sketch
dy