Hello,
I managed to trim a nurbs sphere to get my desired shape (instead of what you suggested to loft, because it was not giving me a sphere in the end) but I would like to "sew" the surfaces together before converting to poly because it is creating polys that are not continuous.

My nurb trims are from the same nurbs sphere, but treated as separate surfaces like in the picture below :


Is there a tool i'm missing ?

Thanks