when creating a route from a template, use correct call to setup XML state so that name/ports are unique

libs/ardour/session.cc

@@ -3480,9 +3480,7 @@ Session::new_route_from_template (uint32_t how_many, PresentationInfo::order_t i
 						(*i)->remove_property (X_("bitslot"));
 					}
 					else if (type && type->value() == X_("port")) {
-						// PortInsert::set_state() handles the bitslot
-						(*i)->remove_property (X_("bitslot"));
-						(*i)->set_property ("ignore-name", "1");
+						IOProcessor::prepare_for_reset (**i, name);
 					}
 				}
 			}