Index: trunk/src/obj_line.c
===================================================================
--- trunk/src/obj_line.c	(revision 8957)
+++ trunk/src/obj_line.c	(revision 8958)
@@ -487,29 +487,24 @@
 		pcb_route_t route;
 		pcb_point_t point1 = (&Line->Point1 == Point ? Line->Point2 : Line->Point1);
 		pcb_point_t point2 = *Point;
-		pcb_coord_t thickness = Line->Thickness;
-		pcb_coord_t clearance = Line->Clearance;
-		pcb_flag_t flags = Line->Flags;
 
 		point2.X += ctx->move.dx;
 		point2.Y += ctx->move.dy;
 	
-		if((point1.X != point2.X) || (point1.Y != point2.Y)) {
-			/* Calculate the new line route and add apply it */
-			pcb_route_init(&route);
-			pcb_route_calculate(PCB,
-													&route,
-													&point1,
-													&point2,
-													pcb_layer_id(PCB->Data,Layer),
-													thickness,
-													clearance,
-													flags,
-													pcb_gui->shift_is_pressed(),
-													pcb_gui->control_is_pressed() );
-			pcb_route_apply_to_line(&route,Layer,Line);
-			pcb_route_destroy(&route);
-		}
+		/* Calculate the new line route and add apply it */
+		pcb_route_init(&route);
+		pcb_route_calculate(PCB,
+												&route,
+												&point1,
+												&point2,
+												pcb_layer_id(PCB->Data,Layer),
+												Line->Thickness,
+												Line->Clearance,
+												Line->Flags,
+												pcb_gui->shift_is_pressed(),
+												pcb_gui->control_is_pressed() );
+		pcb_route_apply_to_line(&route,Layer,Line);
+		pcb_route_destroy(&route);
 
 		pcb_draw();
 	}
Index: trunk/src/route.c
===================================================================
--- trunk/src/route.c	(revision 8957)
+++ trunk/src/route.c	(revision 8958)
@@ -349,10 +349,18 @@
 	route->PCB					= PCB;
 	route->flags				= flags;
 
+	/* If the start point is the same as the end point then add a single 0-length line. 
+	 * If a 0-length line is not added then some operations such as moving a line point
+	 * could cause the line to disappear.
+	 */
+	if((point1->X == point2->X) && (point1->Y == point2->Y)) {
+		route->end_point = *point2;
+		pcb_route_add_line(route,point1,point2,layer_id);
+	}
 	/* If Refraction is 0 then add a single line segment that is horizontal, vertical or 45 degrees. 
 	* This line segment might not end under the crosshair.
 	*/
-	if(conf_core.editor.line_refraction == 0)	{
+	else if(conf_core.editor.line_refraction == 0)	{
 		pcb_point_t target = *point2;
 		pcb_route_calculate_45(point1,&target);
 		pcb_route_add_line(route,point1,&target,layer_id);