FS-4655 its not a bug its a behaviour request, try this patch

src/mod/endpoints/mod_alsa/mod_alsa.c

@@ -758,7 +758,7 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
 													switch_call_cause_t *cancel_cause)
 {
 
-	if ((*new_session = switch_core_session_request(alsa_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool)) != 0) {
+	if ((*new_session = switch_core_session_request_uuid(alsa_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool, switch_event_get_header(var_event, "origination_uuid"))) != 0) {
 		private_t *tech_pvt;
 		switch_channel_t *channel;
 		switch_caller_profile_t *caller_profile;

src/mod/endpoints/mod_portaudio/mod_portaudio.c

@@ -1157,7 +1157,7 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
 		return retcause;
 	}
 
-	if (!(*new_session = switch_core_session_request(portaudio_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool))) {
+	if (!(*new_session = switch_core_session_request_uuid(portaudio_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool, switch_event_get_header(var_event, "origination_uuid")))) {
 		return retcause;
 	}
 

src/mod/endpoints/mod_rtmp/mod_rtmp.c

@@ -590,7 +590,7 @@ switch_call_cause_t rtmp_outgoing_channel(switch_core_session_t *session, switch
 		goto fail;
 	}
 	
-	if (!(*newsession = switch_core_session_request(rtmp_globals.rtmp_endpoint_interface, flags, SWITCH_CALL_DIRECTION_OUTBOUND, inpool))) {
+	if (!(*newsession = switch_core_session_request_uuid(rtmp_globals.rtmp_endpoint_interface, flags, SWITCH_CALL_DIRECTION_OUTBOUND, inpool, switch_event_get_header(var_event, "origination_uuid")))) {
 		goto fail;
 	}
 	

src/mod/endpoints/mod_skypopen/mod_skypopen.c

@@ -1261,7 +1261,7 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
 													switch_call_cause_t *cancel_cause)
 {
 	private_t *tech_pvt = NULL;
-	if ((*new_session = switch_core_session_request(skypopen_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool)) != 0) {
+	if ((*new_session = switch_core_session_request_uuid(skypopen_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool, switch_event_get_header(var_event, "origination_uuid"))) != 0) {
 		switch_channel_t *channel = NULL;
 		switch_caller_profile_t *caller_profile;
 		char *rdest;

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -4538,7 +4538,8 @@ static switch_call_cause_t sofia_outgoing_channel(switch_core_session_t *session
 		goto error;
 	}
 
-	if (!(nsession = switch_core_session_request(sofia_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool))) {
+	if (!(nsession = switch_core_session_request_uuid(sofia_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, 
+													  flags, pool, switch_event_get_header(var_event, "origination_uuid")))) {
 		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Error Creating Session\n");
 		goto error;
 	}

src/mod/endpoints/mod_unicall/mod_unicall.c

@@ -197,7 +197,7 @@ static switch_call_cause_t unicall_incoming_channel(zap_sigmsg_t *sigmsg, switch
 
 	*sp = NULL;
 
-	if (!(session = switch_core_session_request(openzap_endpoint_interface, SWITCH_CALL_DIRECTION_INBOUND, SOF_NONE, NULL))) {
+	if (!(session = switch_core_session_request_uuid(openzap_endpoint_interface, SWITCH_CALL_DIRECTION_INBOUND, SOF_NONE, NULL, switch_event_get_header(var_event, "origination_uuid")))) {
 		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Initialization Error!\n");
 		return ZAP_FAIL;
 	}

src/switch_core_session.c

@@ -1682,6 +1682,11 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_set_uuid(switch_core_session
 
 	switch_assert(use_uuid);
 
+	if (!strcmp(use_uuid, session->uuid_str)) {
+		return SWITCH_STATUS_SUCCESS;
+	}
+
+
 	switch_mutex_lock(runtime.session_hash_mutex);
 	if (switch_core_hash_find(session_manager.session_table, use_uuid)) {
 		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Duplicate UUID!\n");