To stretch sketch entities: In Edit Sketch mode click Stretch Entities (Sketch toolbar) or Tools > Sketch Tools > Stretch Entities. In the PropertyManager, underEntities to Stretch, select sketch entities for Sketch item or annotations. Click Base point and then click on the sketch to set a base point.
First, go to the Sketch tab in the Command Manager, click on the Display/Delete Relations. Then go to theRelations dialogue box and Shift + select all your sketch relations, then check the Suppress check box.