Help! I am creating a new part while in assembly mode by INSERTING a block first. Since it won't let me EXTRUDE the block itself, I first CONVERT some of the entities of the block into new sketch entities (line, arcs, etc.) , then EXTRUDE that sketch. The problem is that later when I move the block in the assembly to a new position, the converted entites do not move along with it, and the assembly does not update to my new geometry. Am I going about this the wrong way? Help!