Index: trunk/src/obj_subc.c
===================================================================
--- trunk/src/obj_subc.c	(revision 12903)
+++ trunk/src/obj_subc.c	(revision 12904)
@@ -845,7 +845,7 @@
 	pcb_undo_add_obj_to_create(PCB_TYPE_SUBC, sc, sc, sc);
 
 	if (conf_core.editor.show_solder_side)
-		pcb_subc_change_side(sc, 2 * pcb_crosshair.Y - PCB->MaxHeight);
+		pcb_subc_change_side(&sc, 2 * pcb_crosshair.Y - PCB->MaxHeight);
 
 	pcb_text_dyn_bbox_update(sc->data);
 
@@ -1262,22 +1262,22 @@
 		pcb_r_insert_entry(data->subc_tree, (pcb_box_t *)subc, 0);
 }
 
-pcb_bool pcb_subc_change_side(pcb_subc_t *subc, pcb_coord_t yoff)
+pcb_bool pcb_subc_change_side(pcb_subc_t **subc, pcb_coord_t yoff)
 {
 	pcb_opctx_t ctx;
 	pcb_subc_t *newsc, *newsc2;
 	int n;
 
-	if (PCB_FLAG_TEST(PCB_FLAG_LOCK, subc))
+	if (PCB_FLAG_TEST(PCB_FLAG_LOCK, *subc))
 		return (pcb_false);
 
 
 	/* move subc into a local "buffer" */
 	memset(&ctx, 0, sizeof(ctx));
-	ctx.buffer.pcb = pcb_data_get_top(subc->data);
+	ctx.buffer.pcb = pcb_data_get_top((*subc)->data);
 	ctx.buffer.dst = pcb_data_new(NULL);
 	ctx.buffer.src = PCB->Data;
-	newsc = pcb_subcop_move_to_buffer(&ctx, subc);
+	newsc = pcb_subcop_move_to_buffer(&ctx, *subc);
 
 
 	/* mirror object geometry and stackup */
@@ -1293,8 +1293,11 @@
 	/* place the new subc */
 	newsc2 = pcb_subc_dup_at(PCB, PCB->Data, newsc, 0, 0, pcb_true);
 	newsc2->ID = newsc->ID;
+	PCB_SET_PARENT(newsc2, data, PCB->Data);
 	pcb_undo_add_subc_to_otherside(PCB_TYPE_SUBC, newsc2, newsc2, newsc2, yoff);
 
+	*subc = newsc2;
+	pcb_subc_free(newsc);
 	pcb_data_free(ctx.buffer.dst);
 	return pcb_true;
 }
Index: trunk/src/obj_subc.h
===================================================================
--- trunk/src/obj_subc.h	(revision 12903)
+++ trunk/src/obj_subc.h	(revision 12904)
@@ -63,7 +63,7 @@
 void pcb_subc_mirror(pcb_data_t *data, pcb_subc_t *subc, pcb_coord_t y_offs);
 
 /* changes the side of the board an element is on; returns pcb_true if done */
-pcb_bool pcb_subc_change_side(pcb_subc_t *subc, pcb_coord_t yoff);
+pcb_bool pcb_subc_change_side(pcb_subc_t **subc, pcb_coord_t yoff);
 
 
 void XORDrawSubc(pcb_subc_t *sc, pcb_coord_t DX, pcb_coord_t DY);
Index: trunk/src/object_act.c
===================================================================
--- trunk/src/object_act.c	(revision 12903)
+++ trunk/src/object_act.c	(revision 12904)
@@ -389,7 +389,7 @@
 			if ((pcb_search_screen(x, y, PCB_TYPE_SUBC, &ptrtmp, &ptrtmp, &ptrtmp)) != PCB_TYPE_NONE) {
 				pcb_subc_t *subc = (pcb_subc_t *)ptrtmp;
 				pcb_undo_save_serial();
-				pcb_subc_change_side(subc, 2 * pcb_crosshair.Y - PCB->MaxHeight);
+				pcb_subc_change_side(&subc, 2 * pcb_crosshair.Y - PCB->MaxHeight);
 				pcb_undo_inc_serial();
 				pcb_draw();
 			}
Index: trunk/src/undo_old.c
===================================================================
--- trunk/src/undo_old.c	(revision 12903)
+++ trunk/src/undo_old.c	(revision 12904)
@@ -474,7 +474,7 @@
 		pcb_subc_t *subc = (pcb_subc_t *)ptr3;
 		if (pcb_undo_and_draw)
 			EraseSubc(subc);
-		pcb_subc_change_side(subc, Entry->Data.Move.DY);
+		pcb_subc_change_side(&subc, Entry->Data.Move.DY);
 		if (pcb_undo_and_draw)
 			DrawSubc(subc);
 		return (pcb_true);