diff --git a/salt/common/tools/sbin/so-log-check b/salt/common/tools/sbin/so-log-check
index 4a8a1db14..39f36eacc 100755
--- a/salt/common/tools/sbin/so-log-check
+++ b/salt/common/tools/sbin/so-log-check
@@ -134,6 +134,7 @@ if [[ $EXCLUDE_STARTUP_ERRORS == 'Y' ]]; then
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|Redis may have been restarted" # Redis likely restarted by salt
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|file already closed"          # Go logging race condition during container restart
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|relation \"audit_settings\" does not exist" # salt checking for changes before SOC starts
+    EXCLUDED_ERRORS="$EXCLUDED_ERRORS|Error in plugin: elasticsearch: Unable to retrieve master node information" # expected error while ES is upgrading/electing a master 
 fi
 
 if [[ $EXCLUDE_FALSE_POSITIVE_ERRORS == 'Y' ]]; then
@@ -240,6 +241,7 @@ if [[ $EXCLUDE_KNOWN_ERRORS == 'Y' ]]; then
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|tcp 127.0.0.1:6791: bind: address already in use" # so-elastic-fleet agent restarting. Seen starting w/ 8.18.8 https://github.com/elastic/kibana/issues/201459
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|TransformTask\] \[logs-.*user so_kibana lacks the required permissions" # Known issue with integrations starting transform jobs that are explicitly not allowed to start as a system user
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|manifest unknown"             # appears in so-dockerregistry log for so-tcpreplay following docker upgrade to 29.2.1-1
+    EXCLUDED_ERRORS="$EXCLUDED_ERRORS|Could not index event to Elasticsearch.*\"version\" => \"9.0.8\"" # Expected during Elastic upgrade temporarily, as policies referencing older pipelines are updated
 fi
 
 RESULT=0
@@ -304,4 +306,4 @@ else
     echo -e "\nResult: One or more errors found"
 fi
 
-exit $RESULT
+exit $RESULT
\ No newline at end of file
diff --git a/salt/elasticfleet/manager.sls b/salt/elasticfleet/manager.sls
index 4ae64314b..fbef61e1f 100644
--- a/salt/elasticfleet/manager.sls
+++ b/salt/elasticfleet/manager.sls
@@ -68,6 +68,15 @@ so-elastic-fleet-package-upgrade:
     - require:
       - http: wait_for_so-kibana
 
+so-elastic-fleet-integration-upgrade:
+  cmd.run:
+    - name: /usr/sbin/so-elastic-fleet-integration-upgrade
+    - retry:
+        attempts: 3
+        interval: 10
+    - require:
+      - cmd: so-elastic-fleet-package-upgrade
+
 so-elastic-fleet-integrations:
   cmd.run:
     - name: /usr/sbin/so-elastic-fleet-integration-policy-load
@@ -86,15 +95,6 @@ so-elastic-agent-grid-upgrade:
     - require:
       - http: wait_for_so-kibana
 
-so-elastic-fleet-integration-upgrade:
-  cmd.run:
-    - name: /usr/sbin/so-elastic-fleet-integration-upgrade
-    - retry:
-        attempts: 3
-        interval: 10
-    - require:
-      - http: wait_for_so-kibana
-
 {# Optional integrations script doesn't need the retries like so-elastic-fleet-integration-upgrade which loads the default integrations #}
 so-elastic-fleet-addon-integrations:
   cmd.run:
diff --git a/salt/elasticfleet/tools/sbin_jinja/so-elastic-fleet-package-upgrade b/salt/elasticfleet/tools/sbin_jinja/so-elastic-fleet-package-upgrade
index d645403d5..1b1b79e56 100644
--- a/salt/elasticfleet/tools/sbin_jinja/so-elastic-fleet-package-upgrade
+++ b/salt/elasticfleet/tools/sbin_jinja/so-elastic-fleet-package-upgrade
@@ -11,16 +11,48 @@
 PKG_LOAD_FAILURES=0
 PKG_LOAD_FAILURES_NAMES=()
 
+cleanup_elasticsearch_fleet_transforms() {
+    local transforms transform_id attempt
+    
+    if ! transforms=$(so-elasticsearch-query "_transform/logs-elasticsearch.index_pivot-default-*" --retry 1 --retry-delay 5); then
+        return 0
+    fi
+
+    while IFS= read -r transform_id; do
+        [ -n "$transform_id" ] || continue
+        for attempt in {1..3}; do
+            if so-elasticsearch-query "_transform/$transform_id?force=true" -XDELETE --fail --retry 1 --retry-delay 5; then
+                break
+            fi
+            sleep 5
+        done
+    done < <(jq -r '.transforms[]?.id' <<< "$transforms")
+}
+
 {%- for PACKAGE in SUPPORTED_PACKAGES %}
 if INSTALLED_VERSION=$(elastic_fleet_package_version_check "{{ PACKAGE }}") && LATEST_VERSION=$(elastic_fleet_package_latest_version_check "{{ PACKAGE }}"); then
 
     if [ "$INSTALLED_VERSION" == "$LATEST_VERSION" ]; then
         echo "{{ PACKAGE }} integration version $INSTALLED_VERSION is already at the reported latest version $LATEST_VERSION, skipping upgrade."
     else
+{%- if PACKAGE == 'elasticsearch' %}
+        cleanup_elasticsearch_fleet_transforms
+{%- endif %}
         echo "Upgrading {{ PACKAGE }} package from $INSTALLED_VERSION to version $LATEST_VERSION..."
         if ! elastic_fleet_package_install "{{ PACKAGE }}" "$LATEST_VERSION"; then
             PKG_LOAD_FAILURES=$((PKG_LOAD_FAILURES + 1))
             PKG_LOAD_FAILURES_NAMES+=("{{ PACKAGE }}")
+        # check that package has upgraded to the expected version after install command
+        elif ! LATEST_VERSION=$(elastic_fleet_package_latest_version_check "{{ PACKAGE }}"); then
+            echo "ERROR: Failed to get latest version information for integration {{ PACKAGE }} after upgrade attempt"
+            PKG_LOAD_FAILURES=$((PKG_LOAD_FAILURES + 1))
+            PKG_LOAD_FAILURES_NAMES+=("{{ PACKAGE }}")
+        elif INSTALLED_VERSION=$(elastic_fleet_package_version_check "{{ PACKAGE }}") && [ "$INSTALLED_VERSION" == "$LATEST_VERSION" ]; then
+            echo "{{ PACKAGE }} integration upgraded to version $LATEST_VERSION."
+        else
+            echo "ERROR: {{ PACKAGE }} integration still at ${INSTALLED_VERSION:-unknown}; expected $LATEST_VERSION"
+            PKG_LOAD_FAILURES=$((PKG_LOAD_FAILURES + 1))
+            PKG_LOAD_FAILURES_NAMES+=("{{ PACKAGE }}")
         fi
     fi
 else
diff --git a/salt/manager/tools/sbin/soup b/salt/manager/tools/sbin/soup
index 43fd9b84f..672941bee 100755
--- a/salt/manager/tools/sbin/soup
+++ b/salt/manager/tools/sbin/soup
@@ -455,6 +455,19 @@ highstate() {
   salt-call state.highstate -l info queue=True
 }
 
+upgrade_searchnode_elasticsearch() {
+  # Run the elasticsearch state across the true elastic cluster (non-heavy) with a retry attempt
+  #   Excludes the manager, so that kibana & elasticfleet are not upgraded until searchnodes are upgraded.
+  echo "Getting ready to upgrade Elasticsearch across the grid. This may take a while..."
+  if salt -C "I@elasticsearch:enabled and not G@role:so-heavynode and not G@id:${MINIONID}" state.apply elasticsearch queue=True batch=10%; then
+    return 0
+  fi
+  
+  echo "Initial elasticsearch state attempt had a problem; retrying in 30 seconds."
+  sleep 30
+  salt -C "I@elasticsearch:enabled and not G@role:so-heavynode and not G@id:${MINIONID}" state.apply elasticsearch queue=True batch=10%
+}
+
 push_grid_highstate() {
   # Drive a batched, role-tiered highstate across the rest of the grid so remote minions
   # pick up this upgrade now instead of waiting up to ~2.5 hours for their own scheduled
@@ -2117,7 +2130,17 @@ main() {
 
     # ensure the mine is updated and populated before highstates run, following the salt-master restart
     update_salt_mine
-
+    
+    # kick off a searchnode elasticsearch upgrade
+    set +e
+    if [[ "$es_version" != "$target_es_version" ]]; then
+      if salt-key -L accepted | grep -q "_searchnode$" 2>/dev/null; then
+        # only run if there is atleast 1 searchnode
+        upgrade_searchnode_elasticsearch
+      fi
+    fi
+    set -e
+    
     highstate
     check_saltmaster_status
     postupgrade_changes