diff --git a/src/main/java/net/openhft/chronicle/map/AbstractChannelReplicator.java b/src/main/java/net/openhft/chronicle/map/AbstractChannelReplicator.java
index ecbbdad9e..ce4d94227 100644
--- a/src/main/java/net/openhft/chronicle/map/AbstractChannelReplicator.java
+++ b/src/main/java/net/openhft/chronicle/map/AbstractChannelReplicator.java
@@ -120,6 +120,11 @@ abstract class AbstractChannelReplicator implements Closeable {
         closeables.closeQuietly(channel);
     }
 
+    /**
+     * forces the TCP and UDP replicators to re-bootstrap
+     * This is called whenever a new CHM is added to a custer
+     */
+    public abstract void forceBootstrap();
 
     void checkThrottleInterval() throws ClosedChannelException {
         if (throttler != null)
diff --git a/src/main/java/net/openhft/chronicle/map/TcpReplicator.java b/src/main/java/net/openhft/chronicle/map/TcpReplicator.java
index 515d77d62..0dda8b663 100644
--- a/src/main/java/net/openhft/chronicle/map/TcpReplicator.java
+++ b/src/main/java/net/openhft/chronicle/map/TcpReplicator.java
@@ -36,8 +36,8 @@ import static java.nio.channels.SelectionKey.*;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 
 /**
- * Used with a {@see net.openhft.map.ReplicatedSharedHashMap} to send data between the maps using a socket
- * connection <p/> {@see net.openhft.map.OutSocketReplicator}
+ * Used with a {@see net.openhft.map.ReplicatedSharedHashMap} to send data between the maps using a
+ * socket connection <p/> {@see net.openhft.map.OutSocketReplicator}
  *
  * @author Rob Austin.
  */
@@ -64,9 +64,9 @@ class TcpReplicator extends AbstractChannelReplicator implements Closeable {
 
     /**
      * @param maxEntrySizeBytes used to check that the last entry will fit into the buffer, it can not be
-     *                          smaller than the size of and entry, if it is set smaller the buffer will over
-     *                          flow, it can be larger then the entry, but setting it too large reduces the
-     *                          workable space in the buffer.
+     *                          smaller than the size of and entry, if it is set smaller the buffer will
+     *                          over flow, it can be larger then the entry, but setting it too large
+     *                          reduces the workable space in the buffer.
      * @throws IOException
      */
     TcpReplicator(@NotNull final Replica replica,
@@ -295,6 +295,11 @@ class TcpReplicator extends AbstractChannelReplicator implements Closeable {
         closeEarlyAndQuietly(key.channel());
     }
 
+    @Override
+    public void forceBootstrap() {
+        forceBootstrap.lazySet(true);
+    }
+
     /**
      * called when the selector receives a OP_CONNECT message
      */
@@ -517,9 +522,9 @@ class TcpReplicator extends AbstractChannelReplicator implements Closeable {
 
     /**
      * sets interestOps to "selector keys",The change to interestOps much be on the same thread as the
-     * selector. This  class, allows via {@link AbstractChannelReplicator .KeyInterestUpdater#set(int)}  to
-     * holds a pending change  in interestOps ( via a bitset ), this change is processed later on the same
-     * thread as the selector
+     * selector. This  class, allows via {@link AbstractChannelReplicator
+     * .KeyInterestUpdater#set(int)}  to holds a pending change  in interestOps ( via a bitset ), this change
+     * is processed later on the same thread as the selector
      */
     private static class KeyInterestUpdater {
 
diff --git a/src/main/java/net/openhft/chronicle/map/UdpReplicator.java b/src/main/java/net/openhft/chronicle/map/UdpReplicator.java
index e71383896..3d91081ee 100644
--- a/src/main/java/net/openhft/chronicle/map/UdpReplicator.java
+++ b/src/main/java/net/openhft/chronicle/map/UdpReplicator.java
@@ -91,6 +91,11 @@ class UdpReplicator extends AbstractChannelReplicator implements Replica.Modific
     }
 
 
+    @Override
+    public void forceBootstrap() {
+        modificationIterator = replica.acquireModificationIterator(
+                ChronicleMapBuilder.UDP_REPLICATION_MODIFICATION_ITERATOR_ID, this);
+    }
 
     /**
      * binds to the server socket and process data This method will block until interrupted