diff --git a/libs/ardour/session_state.cc b/libs/ardour/session_state.cc
index a1c6fec416..53a3e8aeb6 100644
--- a/libs/ardour/session_state.cc
+++ b/libs/ardour/session_state.cc
@@ -2104,6 +2104,17 @@ Session::set_state (const XMLNode& node, int version)
 		}
 	}
 
+	if (version == 3001 && Profile->get_livetrax() && _master_out) {
+		std::shared_ptr<Bundle> b = _master_out->input()->bundle();
+		std::shared_ptr<RouteList const> r = routes.reader();
+		for (auto const& i : *r) {
+			std::shared_ptr<Track> tr = std::dynamic_pointer_cast<Track> (i);
+			if (tr) {
+				tr->output()->connect_ports_to_bundle (b, true, true, this);
+			}
+		}
+	}
+
 	if ((child = find_named_node (node, X_("Selection")))) {
 		_selection->set_state (*child, version);
 	}