Index: undo_old.c
===================================================================
--- undo_old.c	(revision 29777)
+++ undo_old.c	(revision 29778)
@@ -959,6 +959,7 @@
 		case PCB_OBJ_ARC:
 		case PCB_OBJ_TEXT:
 		case PCB_OBJ_POLY:
+		case PCB_OBJ_GFX:
 			subc = pcb_obj_parent_subc(Ptr3);
 			if (subc != NULL) {
 				pcb_term_del(&subc->terminals, o->term, o);