diff --git a/northd/en-sync-sb.c b/northd/en-sync-sb.c
index aae396a43d..8c07a71ee8 100644
--- a/northd/en-sync-sb.c
+++ b/northd/en-sync-sb.c
@@ -248,6 +248,23 @@ sync_to_sb_lb_northd_handler(struct engine_node *node, void *data OVS_UNUSED)
     return true;
 }
 
+bool
+sync_to_sb_lb_sb_load_balancer(struct engine_node *node, void *data OVS_UNUSED)
+{
+    const struct sbrec_load_balancer_table *sb_load_balancer_table =
+        EN_OVSDB_GET(engine_get_input("SB_load_balancer", node));
+
+    /* The only reason to handle SB.Load_Balancer updates is to detect
+     * spurious records being created in clustered databases due to
+     * lack of indexing on the SB.Load_Balancer table.  All other changes
+     * are valid and performed by northd, the only write-client for
+     * this table. */
+    if (check_sb_lb_duplicates(sb_load_balancer_table)) {
+        return false;
+    }
+    return true;
+}
+
 /* sync_to_sb_pb engine node functions.
  * This engine node syncs the SB Port Bindings (partly).
  * en_northd engine create the SB Port binding rows and
diff --git a/northd/en-sync-sb.h b/northd/en-sync-sb.h
index f08565eee1..3bcbb82594 100644
--- a/northd/en-sync-sb.h
+++ b/northd/en-sync-sb.h
@@ -21,6 +21,8 @@ void *en_sync_to_sb_lb_init(struct engine_node *, struct engine_arg *);
 void en_sync_to_sb_lb_run(struct engine_node *, void *data);
 void en_sync_to_sb_lb_cleanup(void *data);
 bool sync_to_sb_lb_northd_handler(struct engine_node *, void *data OVS_UNUSED);
+bool sync_to_sb_lb_sb_load_balancer(struct engine_node *,
+                                    void *data OVS_UNUSED);
 
 void *en_sync_to_sb_pb_init(struct engine_node *, struct engine_arg *);
 void en_sync_to_sb_pb_run(struct engine_node *, void *data);
diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c
index 8b08171179..04df0b06c2 100644
--- a/northd/inc-proc-northd.c
+++ b/northd/inc-proc-northd.c
@@ -230,7 +230,8 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
 
     engine_add_input(&en_sync_to_sb_lb, &en_northd,
                      sync_to_sb_lb_northd_handler);
-    engine_add_input(&en_sync_to_sb_lb, &en_sb_load_balancer, NULL);
+    engine_add_input(&en_sync_to_sb_lb, &en_sb_load_balancer,
+                     sync_to_sb_lb_sb_load_balancer);
 
     engine_add_input(&en_sync_to_sb_pb, &en_northd,
                      sync_to_sb_pb_northd_handler);
diff --git a/northd/northd.c b/northd/northd.c
index 73f19c4be2..80bfc523c5 100644
--- a/northd/northd.c
+++ b/northd/northd.c
@@ -4661,6 +4661,26 @@ sync_lbs(struct ovsdb_idl_txn *ovnsb_txn,
     }
 }
 
+bool
+check_sb_lb_duplicates(const struct sbrec_load_balancer_table *table)
+{
+    struct sset existing_nb_lb_uuids =
+        SSET_INITIALIZER(&existing_nb_lb_uuids);
+    const struct sbrec_load_balancer *sbrec_lb;
+    bool duplicates = false;
+
+    SBREC_LOAD_BALANCER_TABLE_FOR_EACH (sbrec_lb, table) {
+        const char *nb_lb_uuid = smap_get(&sbrec_lb->external_ids, "lb_id");
+        if (nb_lb_uuid && !sset_add(&existing_nb_lb_uuids, nb_lb_uuid)) {
+            duplicates = true;
+            break;
+        }
+    }
+
+    sset_destroy(&existing_nb_lb_uuids);
+    return duplicates;
+}
+
 /* Syncs the SB port binding for the ovn_port 'op'.  Caller should make sure
  * that the OVN SB IDL txn is not NULL.  Presently it only syncs the nat
  * column of port binding corresponding to the 'op->nbsp' */
diff --git a/northd/northd.h b/northd/northd.h
index 4d030b10da..4f870b0baf 100644
--- a/northd/northd.h
+++ b/northd/northd.h
@@ -366,6 +366,7 @@ const struct ovn_datapath *northd_get_datapath_for_port(
     const struct hmap *ls_ports, const char *port_name);
 void sync_lbs(struct ovsdb_idl_txn *, const struct sbrec_load_balancer_table *,
               struct ovn_datapaths *ls_datapaths, struct hmap *lbs);
+bool check_sb_lb_duplicates(const struct sbrec_load_balancer_table *);
 
 void sync_pbs(struct ovsdb_idl_txn *, struct hmap *ls_ports);
 bool sync_pbs_for_northd_ls_changes(struct tracked_ls_changes *);
diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
index 6d798e3e6f..bf14235f2e 100644
--- a/tests/ovn-northd.at
+++ b/tests/ovn-northd.at
@@ -10392,6 +10392,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.10:80 10.0.0.3:80
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10400,16 +10401,19 @@ check ovn-nbctl --wait=sb set load_balancer . ip_port_mappings:10.0.0.3=sw0-p1:1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 check ovn-nbctl --wait=sb set load_balancer . options:foo=bar
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 check ovn-nbctl --wait=sb -- lb-add lb2 20.0.0.10:80 20.0.0.20:80 -- lb-add lb3 30.0.0.10:80 30.0.0.20:80
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10418,6 +10422,7 @@ check ovn-nbctl --wait=sb -- lb-del lb2 -- lb-del lb3
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10430,6 +10435,7 @@ AT_CHECK([ovn-nbctl --wait=sb \
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 # Any change to load balancer health check should also result in full recompute
 # of northd node (but not northd_lb_data node)
@@ -10438,6 +10444,7 @@ check ovn-nbctl --wait=sb set load_balancer_health_check . options:foo=bar1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 # Delete the health check from the load balancer.  northd engine node should do a full recompute.
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10445,6 +10452,7 @@ check ovn-nbctl --wait=sb clear Load_Balancer . health_check
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
 check ovn-nbctl ls-add sw0
@@ -10458,6 +10466,7 @@ ovn-nbctl --wait=sb lsp-set-options sw0-lr0 router-port=lr0-sw0
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 # Associate lb1 to sw0. There should be no recompute of northd engine node
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10465,6 +10474,10 @@ check ovn-nbctl --wait=sb ls-lb-add sw0 lb1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+# A LB applied to a switch/router triggers:
+# - a recompute in the first iteration (handling northd change)
+# - a compute in the second iteration (handling SB update)
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Modify the backend of the lb1 vip
@@ -10473,6 +10486,7 @@ check ovn-nbctl --wait=sb set load_balancer lb1 vips:'"10.0.0.10:80"'='"10.0.0.1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Cleanup the vip of lb1.
@@ -10481,6 +10495,7 @@ check ovn-nbctl --wait=sb clear load_Balancer lb1 vips
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Set the vips of lb1 back
@@ -10489,6 +10504,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.10:80 10.0.0.3:80
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Add another vip to lb1
@@ -10497,6 +10513,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.20:80 10.0.0.30:8080
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Disassociate lb1 from sw0. There should be a full recompute of northd engine node.
@@ -10505,6 +10522,7 @@ check ovn-nbctl --wait=sb ls-lb-del sw0 lb1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Associate lb1 to sw0 and also create a port sw0p1.  This should not result in
@@ -10514,6 +10532,7 @@ check ovn-nbctl --wait=sb ls-lb-add sw0 lb1 -- lsp-add sw0 sw0p1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10524,6 +10543,7 @@ check ovn-nbctl --wait=sb ls-lb-del sw0 lb1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Add lb1 to lr0 and then disassociate
@@ -10532,6 +10552,7 @@ check ovn-nbctl --wait=sb lr-lb-add lr0 lb1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Modify the backend of the lb1 vip
@@ -10540,6 +10561,7 @@ check ovn-nbctl --wait=sb set load_balancer lb1 vips:'"10.0.0.10:80"'='"10.0.0.1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Cleanup the vip of lb1.
@@ -10548,6 +10570,7 @@ check ovn-nbctl --wait=sb clear load_Balancer lb1 vips
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Set the vips of lb1 back
@@ -10556,6 +10579,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.10:80 10.0.0.3:80
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Add another vip to lb1
@@ -10564,6 +10588,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.20:80 10.0.0.30:8080
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10571,6 +10596,7 @@ check ovn-nbctl --wait=sb lr-lb-del lr0 lb1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Test load balancer group now
@@ -10579,6 +10605,7 @@ lbg1_uuid=$(ovn-nbctl --wait=sb create load_balancer_group name=lbg1)
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10591,12 +10618,14 @@ check ovn-nbctl --wait=sb add load_balancer_group . load_Balancer $lb1_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
 check ovn-nbctl --wait=sb clear load_balancer_group . load_Balancer
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 # Add back lb to the lbg1 group
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10604,6 +10633,7 @@ check ovn-nbctl --wait=sb add load_balancer_group . load_Balancer $lb1_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
@@ -10612,6 +10642,7 @@ check ovn-nbctl --wait=sb add logical_switch sw0 load_balancer_group $lbg1_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 
 # Update lb and this should not result in northd recompute
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10619,6 +10650,7 @@ check ovn-nbctl --wait=sb set load_balancer . options:bar=foo
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 
 # Modify the backend of the lb1 vip
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10626,6 +10658,7 @@ check ovn-nbctl --wait=sb set load_balancer lb1 vips:'"10.0.0.10:80"'='"10.0.0.1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Cleanup the vip of lb1.
@@ -10634,6 +10667,7 @@ check ovn-nbctl --wait=sb clear load_Balancer lb1 vips
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Set the vips of lb1 back
@@ -10642,6 +10676,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.10:80 10.0.0.3:80
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Add another vip to lb1
@@ -10650,6 +10685,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.20:80 10.0.0.30:8080
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10657,12 +10693,14 @@ check ovn-nbctl --wait=sb clear logical_switch sw0 load_balancer_group
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
 check ovn-nbctl add logical_router lr0 load_balancer_group $lbg1_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Modify the backend of the lb1 vip
@@ -10671,6 +10709,7 @@ check ovn-nbctl --wait=sb set load_balancer lb1 vips:'"10.0.0.10:80"'='"10.0.0.1
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Cleanup the vip of lb1.
@@ -10679,6 +10718,7 @@ check ovn-nbctl --wait=sb clear load_Balancer lb1 vips
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Set the vips of lb1 back
@@ -10687,6 +10727,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.10:80 10.0.0.3:80
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Add another vip to lb1
@@ -10695,6 +10736,7 @@ check ovn-nbctl --wait=sb lb-add lb1 10.0.0.20:80 10.0.0.30:8080
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10702,6 +10744,7 @@ check ovn-nbctl --wait=sb clear logical_router lr0 load_balancer_group
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 
 # Add back lb group to logical switch and then delete it.
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10709,6 +10752,7 @@ check ovn-nbctl --wait=sb add logical_switch sw0 load_balancer_group $lbg1_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
 check ovn-nbctl --wait=sb clear logical_switch sw0 load_balancer_group -- \
@@ -10716,6 +10760,7 @@ check ovn-nbctl --wait=sb clear logical_switch sw0 load_balancer_group -- \
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb compute compute
 
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
@@ -10738,18 +10783,21 @@ lbg1_uuid=$(ovn-nbctl --wait=sb create load_balancer_group name=lbg1)
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
 check ovn-nbctl --wait=sb set load_balancer_group . load_balancer="$lb2_uuid,$lb3_uuid,$lb4_uuid"
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
 check ovn-nbctl --wait=sb set logical_switch sw0 load_balancer_group=$lbg1_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10757,6 +10805,7 @@ check ovn-nbctl --wait=sb set logical_router lr1 load_balancer_group=$lbg1_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10764,6 +10813,7 @@ check ovn-nbctl --wait=sb ls-lb-add sw0 lb2
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10771,6 +10821,7 @@ check ovn-nbctl --wait=sb ls-lb-add sw0 lb3
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10779,6 +10830,7 @@ check ovn-nbctl --wait=sb lr-lb-add lr1 lb2
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10786,6 +10838,7 @@ check ovn-nbctl --wait=sb ls-lb-del sw0 lb2
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10793,6 +10846,7 @@ check ovn-nbctl --wait=sb lr-lb-del lr1 lb2
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute nocompute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Deleting lb4 should not result in lflow recompute as it is
@@ -10802,6 +10856,7 @@ check ovn-nbctl --wait=sb lb-del lb4
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 # Deleting lb2 should result in lflow recompute as it is
@@ -10811,6 +10866,7 @@ check ovn-nbctl --wait=sb lb-del lb2
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd norecompute compute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
@@ -10818,6 +10874,7 @@ check ovn-nbctl --wait=sb remove load_balancer_group . load_balancer $lb3_uuid
 check_engine_stats lb_data norecompute compute
 check_engine_stats northd recompute nocompute
 check_engine_stats lflow recompute nocompute
+check_engine_stats sync_to_sb_lb recompute compute
 CHECK_NO_CHANGE_AFTER_RECOMPUTE
 
 AT_CLEANUP