Copy Lines

Copy lines or faces from the earlier geometry of the part.

1. Select 3D Sketch | Line Tools | Copy Lines.
2. Select from the part earlier geometry or other part lines and faces which silhouette lines you want to copy to the sketch.
3. Finish copying by pressing the middle mouse button.

When copying the lines get the Identical constraint with the original lines. If the original geometry changes, the lines change in the sketch.