diff --git a/common/src/main/java/org/opensearch/ml/common/model/MLDeploySetting.java b/common/src/main/java/org/opensearch/ml/common/model/MLDeploySetting.java
index 0237bf58ec..4bd864b237 100644
--- a/common/src/main/java/org/opensearch/ml/common/model/MLDeploySetting.java
+++ b/common/src/main/java/org/opensearch/ml/common/model/MLDeploySetting.java
@@ -16,7 +16,6 @@
 import org.opensearch.core.xcontent.ToXContentObject;
 import org.opensearch.core.xcontent.XContentBuilder;
 import org.opensearch.core.xcontent.XContentParser;
-import org.opensearch.ml.common.transport.sync.MLSyncUpInput;
 
 import java.io.IOException;
 
@@ -28,6 +27,7 @@ public class MLDeploySetting implements ToXContentObject, Writeable {
     public static final String IS_AUTO_DEPLOY_ENABLED_FIELD = "is_auto_deploy_enabled";
     public static final String MODEL_TTL_MINUTES_FIELD = "model_ttl_minutes";
     private static final long DEFAULT_TTL_MINUTES = -1;
+    public static final Version MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL = Version.V_2_14_0;
 
     private Boolean isAutoDeployEnabled;
     private Long modelTTLInMinutes; // in minutes
@@ -44,7 +44,7 @@ public MLDeploySetting(Boolean isAutoDeployEnabled, Long modelTTLInMinutes) {
     public MLDeploySetting(StreamInput in) throws IOException {
         this.isAutoDeployEnabled = in.readOptionalBoolean();
         Version streamInputVersion = in.getVersion();
-        if (streamInputVersion.onOrAfter(MLSyncUpInput.MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
+        if (streamInputVersion.onOrAfter(MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
             this.modelTTLInMinutes = in.readOptionalLong();
         }
     }
@@ -53,7 +53,7 @@ public MLDeploySetting(StreamInput in) throws IOException {
     public void writeTo(StreamOutput out) throws IOException {
         Version streamOutputVersion = out.getVersion();
         out.writeOptionalBoolean(isAutoDeployEnabled);
-        if (streamOutputVersion.onOrAfter(MLSyncUpInput.MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
+        if (streamOutputVersion.onOrAfter(MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
             out.writeOptionalLong(modelTTLInMinutes);
         }
     }
diff --git a/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpInput.java b/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpInput.java
index 90ff0b614d..7ad34321b8 100644
--- a/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpInput.java
+++ b/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpInput.java
@@ -36,8 +36,6 @@ public class MLSyncUpInput implements Writeable {
     // profile API has consistent data with model index.
     private Map<String, Boolean> deployToAllNodes;
 
-    public static final Version MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL = Version.V_2_14_0;
-
     @Builder
     public MLSyncUpInput(boolean getDeployedModels,
                          Map<String, String[]> addedWorkerNodes,
diff --git a/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpNodeResponse.java b/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpNodeResponse.java
index b77f96faa9..74893ec91e 100644
--- a/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpNodeResponse.java
+++ b/common/src/main/java/org/opensearch/ml/common/transport/sync/MLSyncUpNodeResponse.java
@@ -12,6 +12,7 @@
 import org.opensearch.cluster.node.DiscoveryNode;
 import org.opensearch.core.common.io.stream.StreamInput;
 import org.opensearch.core.common.io.stream.StreamOutput;
+import org.opensearch.ml.common.model.MLDeploySetting;
 
 import java.io.IOException;
 
@@ -42,7 +43,7 @@ public MLSyncUpNodeResponse(StreamInput in) throws IOException {
         this.deployedModelIds = in.readOptionalStringArray();
         this.runningDeployModelIds = in.readOptionalStringArray();
         this.runningDeployModelTaskIds = in.readOptionalStringArray();
-        if (streamInputVersion.onOrAfter(MLSyncUpInput.MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
+        if (streamInputVersion.onOrAfter(MLDeploySetting.MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
             this.expiredModelIds = in.readOptionalStringArray();
         }
     }
@@ -59,7 +60,7 @@ public void writeTo(StreamOutput out) throws IOException {
         out.writeOptionalStringArray(deployedModelIds);
         out.writeOptionalStringArray(runningDeployModelIds);
         out.writeOptionalStringArray(runningDeployModelTaskIds);
-        if (streamOutputVersion.onOrAfter(MLSyncUpInput.MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
+        if (streamOutputVersion.onOrAfter(MLDeploySetting.MINIMAL_SUPPORTED_VERSION_FOR_MODEL_TTL)) {
             out.writeOptionalStringArray(expiredModelIds);
         }
     }
diff --git a/plugin/src/main/java/org/opensearch/ml/cluster/MLSyncUpCron.java b/plugin/src/main/java/org/opensearch/ml/cluster/MLSyncUpCron.java
index 3fee52fc37..22c16d46ca 100644
--- a/plugin/src/main/java/org/opensearch/ml/cluster/MLSyncUpCron.java
+++ b/plugin/src/main/java/org/opensearch/ml/cluster/MLSyncUpCron.java
@@ -140,7 +140,7 @@ public void run() {
 
             Set<String> modelsToUndeploy = new HashSet<>();
             for (String modelId : expiredModelToNodes.keySet()) {
-                if (expiredModelToNodes.get(modelId).size() == modelWorkerNodes.get(modelId).size()) {
+                if (modelWorkerNodes.containsKey(modelId) && expiredModelToNodes.get(modelId).size() == modelWorkerNodes.get(modelId).size()) {
                     // this model has expired in all the nodes
                     modelWorkerNodes.remove(modelId);
                     modelsToUndeploy.add(modelId);