diff --git a/session_utils/copy_mix.cc b/session_utils/copy_mix.cc
new file mode 100644
index 0000000000..8163c47253
--- /dev/null
+++ b/session_utils/copy_mix.cc
@@ -0,0 +1,159 @@
+#include <iostream>
+#include <cstdlib>
+
+#include "pbd/stateful.h"
+#include "ardour/send.h"
+#include "ardour/track.h"
+
+#include "common.h"
+
+#define X_(Text) Text
+
+using namespace std;
+using namespace ARDOUR;
+using namespace SessionUtils;
+
+/* this is copied from  Session::new_route_from_template */
+void trim_state_for_mixer_copy (Session*s, XMLNode& node)
+{
+	/* trim bitslots from listen sends so that new ones are used */
+	XMLNodeList children = node.children ();
+	for (XMLNodeList::iterator i = children.begin(); i != children.end(); ++i) {
+		if ((*i)->name() == X_("Processor")) {
+			/* ForceIDRegeneration does not catch the following */
+			XMLProperty const * role = (*i)->property (X_("role"));
+			XMLProperty const * type = (*i)->property (X_("type"));
+			if (role && role->value() == X_("Aux")) {
+				/* check if the target bus exists.
+				 * we should not save aux-sends in templates.
+				 */
+				XMLProperty const * target = (*i)->property (X_("target"));
+				if (!target) {
+					(*i)->add_property ("type", "dangling-aux-send");
+					continue;
+				}
+				boost::shared_ptr<Route> r = s->route_by_id (target->value());
+				if (!r || boost::dynamic_pointer_cast<Track>(r)) {
+					(*i)->add_property ("type", "dangling-aux-send");
+					continue;
+				}
+			}
+			if (role && role->value() == X_("Listen")) {
+				(*i)->remove_property (X_("bitslot"));
+			}
+			else if (role && (role->value() == X_("Send") || role->value() == X_("Aux"))) {
+				char buf[32];
+				Delivery::Role xrole;
+				uint32_t bitslot = 0;
+				xrole = Delivery::Role (string_2_enum (role->value(), xrole));
+				std::string name = Send::name_and_id_new_send(*s, xrole, bitslot, false);
+				snprintf (buf, sizeof (buf), "%" PRIu32, bitslot);
+				(*i)->remove_property (X_("bitslot"));
+				(*i)->remove_property (X_("name"));
+				(*i)->add_property ("bitslot", buf);
+				(*i)->add_property ("name", name);
+			}
+			else if (type && type->value() == X_("return")) {
+				// Return::set_state() generates a new one
+				(*i)->remove_property (X_("bitslot"));
+			}
+			else if (type && type->value() == X_("port")) {
+				// PortInsert::set_state() handles the bitslot
+				(*i)->remove_property (X_("bitslot"));
+				(*i)->add_property ("ignore-name", "1");
+			}
+		}
+	}
+}
+
+
+static void copy_mixer_settings (Session*s, boost::shared_ptr<Route> dst, XMLNode& state)
+{
+	PBD::Stateful::ForceIDRegeneration force_ids;
+
+	trim_state_for_mixer_copy (s, state);
+	state.remove_nodes_and_delete ("Diskstream");
+	state.remove_nodes_and_delete ("Automation");
+	//state.dump (cerr);
+
+	dst->set_state (state, PBD::Stateful::loading_state_version);
+}
+
+int main (int argc, char* argv[])
+{
+	if (argc < 5) {
+		printf ("Usage: copy-mix <session1-dir> <session1-name> <session2-dir> <session2-name>\n");
+		return -1;
+	}
+
+	std::string session1_dir (argv[1]);
+	std::string session1_name (argv[2]);
+
+	std::string session2_dir = (argv[3]);
+	std::string session2_name = (argv[4]);
+
+
+	SessionUtils::init();
+	Session* s = 0;
+	std::map<std::string,XMLNode*> routestate;
+
+	s = SessionUtils::load_session ( session1_dir, session1_name);
+
+	if (!s) {
+		printf("Cannot load source session.\n");
+		SessionUtils::cleanup();
+		return 0;
+	}
+
+	// get route state from first session
+	boost::shared_ptr<RouteList> rl = s->get_routes ();
+	for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
+		XMLNode& state ((*i)->get_state());
+		routestate[(*i)->name()] = &state;
+	}
+	rl.reset();
+	SessionUtils::unload_session(s);
+
+
+	// open target session
+	s = SessionUtils::load_session (session2_dir, session2_name);
+	if (!s) {
+		printf("Cannot load target session.\n");
+		SessionUtils::cleanup();
+		return 0;
+	}
+
+	// iterate over all routes in the target session..
+	rl = s->get_routes ();
+	for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
+		boost::shared_ptr<Route> r = *i;
+		// skip special busses
+		if (r->is_master() || r->is_monitor() || r->is_auditioner()) {
+			continue;
+		}
+		// find matching route by name
+		std::map<std::string,XMLNode*>::iterator it = routestate.find (r->name ());
+		if (it == routestate.end()) {
+			printf (" -- no match for '%s'\n", (*i)->name().c_str());
+			continue;
+		}
+		printf ("-- found match '%s'\n", (*i)->name().c_str());
+		XMLNode *state = it->second;
+		// copy state
+		copy_mixer_settings (s, r, *state);
+	}
+
+	s->save_state ("");
+
+	rl.reset();
+	SessionUtils::unload_session(s);
+
+	// clean up.
+	for (std::map<std::string,XMLNode*>::iterator i = routestate.begin(); i != routestate.end(); ++i) {
+		XMLNode *state = i->second;
+		delete state;
+	}
+
+	SessionUtils::cleanup();
+	return 0;
+}