diff --git a/solr/core/src/java/org/apache/solr/core/SolrCore.java b/solr/core/src/java/org/apache/solr/core/SolrCore.java
index 48d6dc4610b..3b347fd917e 100644
--- a/solr/core/src/java/org/apache/solr/core/SolrCore.java
+++ b/solr/core/src/java/org/apache/solr/core/SolrCore.java
@@ -205,7 +205,6 @@ public class SolrCore implements SolrInfoBean, Closeable {
   private static final Logger slowLog =
       LoggerFactory.getLogger(
           MethodHandles.lookup().lookupClass().getName() + ".SlowRequest"); // nowarn
-  private final boolean isSynthetic;
 
   private String name;
 
@@ -791,8 +790,7 @@ public SolrCore reload(ConfigSet coreConfig) throws IOException {
                 updateHandler,
                 solrDelPolicy,
                 currentCore,
-                true,
-                isSynthetic);
+                true);
 
         // we open a new IndexWriter to pick up the latest config
         core.getUpdateHandler().getSolrCoreState().newIndexWriter(core, false);
@@ -1054,13 +1052,8 @@ public CoreContainer getCoreContainer() {
     return coreContainer;
   }
 
-  protected SolrCore(CoreContainer coreContainer, CoreDescriptor cd, ConfigSet configSet) {
-    this(coreContainer, cd, configSet, false);
-  }
-
-  protected SolrCore(
-      CoreContainer coreContainer, CoreDescriptor cd, ConfigSet configSet, boolean isSynthetic) {
-    this(coreContainer, cd, configSet, null, null, null, null, false, isSynthetic);
+  SolrCore(CoreContainer coreContainer, CoreDescriptor cd, ConfigSet configSet) {
+    this(coreContainer, cd, configSet, null, null, null, null, false);
   }
 
   private SolrCore(
@@ -1071,8 +1064,7 @@ private SolrCore(
       UpdateHandler updateHandler,
       IndexDeletionPolicyWrapper delPolicy,
       SolrCore prev,
-      boolean reload,
-      boolean isSynthetic) {
+      boolean reload) {
 
     // ensure that in unclean shutdown tests we still close this
     assert ObjectReleaseTracker.track(searcherExecutor);
@@ -1182,10 +1174,8 @@ private SolrCore(
 
       initSearcher(prev);
 
-      this.isSynthetic = isSynthetic;
-
       // Initialize the RestManager
-      restManager = isSynthetic ? new RestManager() : initRestManager();
+      restManager = initRestManager();
 
       // Finally tell anyone who wants to know
       resourceLoader.inform(resourceLoader);
@@ -1212,9 +1202,7 @@ private SolrCore(
       // searcher!
       seedVersionBuckets();
 
-      if (!isSynthetic) {
-        bufferUpdatesIfConstructing(coreDescriptor);
-      }
+      bufferUpdatesIfConstructing(coreDescriptor);
 
       this.ruleExpiryLock = new ReentrantLock();
       this.snapshotDelLock = new ReentrantLock();
@@ -1266,7 +1254,7 @@ public void seedVersionBuckets() {
   }
 
   /** Set UpdateLog to buffer updates if the slice is in construction. */
-  private void bufferUpdatesIfConstructing(CoreDescriptor coreDescriptor) {
+  protected void bufferUpdatesIfConstructing(CoreDescriptor coreDescriptor) {
 
     if (coreContainer != null && coreContainer.isZooKeeperAware()) {
       if (reqHandlers.get("/get") == null) {
diff --git a/solr/core/src/java/org/apache/solr/core/SolrCoreProxy.java b/solr/core/src/java/org/apache/solr/core/SyntheticSolrCore.java
similarity index 59%
rename from solr/core/src/java/org/apache/solr/core/SolrCoreProxy.java
rename to solr/core/src/java/org/apache/solr/core/SyntheticSolrCore.java
index bff8a1f4b80..70aa6f524ab 100644
--- a/solr/core/src/java/org/apache/solr/core/SolrCoreProxy.java
+++ b/solr/core/src/java/org/apache/solr/core/SyntheticSolrCore.java
@@ -3,14 +3,17 @@
 import java.nio.file.Paths;
 import java.util.HashMap;
 import java.util.Map;
+
+import org.apache.solr.common.SolrException;
 import org.apache.solr.common.params.CoreAdminParams;
+import org.apache.solr.rest.RestManager;
 
-public class SolrCoreProxy extends SolrCore {
-  public SolrCoreProxy(CoreContainer coreContainer, CoreDescriptor cd, ConfigSet configSet) {
-    super(coreContainer, cd, configSet, true);
+public class SyntheticSolrCore extends SolrCore {
+  public SyntheticSolrCore(CoreContainer coreContainer, CoreDescriptor cd, ConfigSet configSet) {
+    super(coreContainer, cd, configSet);
   }
 
-  public static SolrCoreProxy createAndRegisterProxy(
+  public static SyntheticSolrCore createAndRegisterCore(
       CoreContainer coreContainer, String syntheticCollectionName, String configSetName) {
     Map<String, String> coreProps = new HashMap<>();
     coreProps.put(CoreAdminParams.CORE_NODE_NAME, coreContainer.getHostName());
@@ -27,10 +30,20 @@ public static SolrCoreProxy createAndRegisterProxy(
     ConfigSet coreConfig =
         coreContainer.getConfigSetService().loadConfigSet(syntheticCoreDescriptor, configSetName);
     syntheticCoreDescriptor.setConfigSetTrusted(coreConfig.isTrusted());
-    SolrCoreProxy syntheticCore =
-        new SolrCoreProxy(coreContainer, syntheticCoreDescriptor, coreConfig);
+    SyntheticSolrCore syntheticCore =
+        new SyntheticSolrCore(coreContainer, syntheticCoreDescriptor, coreConfig);
     coreContainer.registerCore(syntheticCoreDescriptor, syntheticCore, false, false);
 
     return syntheticCore;
   }
+
+  @Override
+  protected void bufferUpdatesIfConstructing(CoreDescriptor coreDescriptor) {
+    //no updates to SyntheticSolrCore
+  }
+
+  @Override
+  protected RestManager initRestManager() throws SolrException {
+    return new RestManager(); //TODO explain why we cannot use the super class init routine
+  }
 }
diff --git a/solr/core/src/java/org/apache/solr/servlet/CoordinatorHttpSolrCall.java b/solr/core/src/java/org/apache/solr/servlet/CoordinatorHttpSolrCall.java
index b0aa18e7e9b..6079b8b009f 100644
--- a/solr/core/src/java/org/apache/solr/servlet/CoordinatorHttpSolrCall.java
+++ b/solr/core/src/java/org/apache/solr/servlet/CoordinatorHttpSolrCall.java
@@ -33,7 +33,7 @@
 import org.apache.solr.core.CoreContainer;
 import org.apache.solr.core.CoreDescriptor;
 import org.apache.solr.core.SolrCore;
-import org.apache.solr.core.SolrCoreProxy;
+import org.apache.solr.core.SyntheticSolrCore;
 import org.apache.solr.request.DelegatingSolrQueryRequest;
 import org.apache.solr.request.SolrQueryRequest;
 import org.slf4j.Logger;
@@ -87,8 +87,8 @@ public static SolrCore getCore(
         String syntheticCollectionName = getSyntheticCollectionName(confName);
 
         CoreContainer coreContainer = solrCall.cores;
-        SolrCoreProxy syntheticCore =
-            SolrCoreProxy.createAndRegisterProxy(
+        SyntheticSolrCore syntheticCore =
+            SyntheticSolrCore.createAndRegisterCore(
                 coreContainer, syntheticCollectionName, coll.getConfigName());
 
         // after this point the sync core should be available in the container. Double check