When I try to create a drilled hole through a body of a bolt for example, I want to chamfer the near and far sides. When I use "to next" the feature stays in the tree but the hole isn't visible. When I use "through all", it tries to extend the termination of the hole to the outside diameter of the bolt head. The hole will be visible with the chamfer on the near side, but the far side chamfer is, of course, not there. Why does the preview for "to next" appear correctly, but the feature disappears when completed?