diff --git a/server/src/main/java/org/elasticsearch/action/support/replication/TransportReplicationAction.java b/server/src/main/java/org/elasticsearch/action/support/replication/TransportReplicationAction.java
index dff635f6e74..695c9162633 100644
--- a/server/src/main/java/org/elasticsearch/action/support/replication/TransportReplicationAction.java
+++ b/server/src/main/java/org/elasticsearch/action/support/replication/TransportReplicationAction.java
@@ -1295,7 +1295,7 @@ public abstract class TransportReplicationAction<
             } else {
                 globalCheckpoint = SequenceNumbers.UNASSIGNED_SEQ_NO;
             }
-            if (in.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+            if (in.getVersion().onOrAfter(Version.V_6_5_0)) {
                 maxSeqNoOfUpdatesOrDeletes = in.readZLong();
             } else {
                 // UNASSIGNED_SEQ_NO (-2) means uninitialized, and replicas will disable
@@ -1310,7 +1310,7 @@ public abstract class TransportReplicationAction<
             if (out.getVersion().onOrAfter(Version.V_6_0_0_alpha1)) {
                 out.writeZLong(globalCheckpoint);
             }
-            if (out.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+            if (out.getVersion().onOrAfter(Version.V_6_5_0)) {
                 out.writeZLong(maxSeqNoOfUpdatesOrDeletes);
             }
         }
diff --git a/server/src/main/java/org/elasticsearch/index/engine/InternalEngine.java b/server/src/main/java/org/elasticsearch/index/engine/InternalEngine.java
index 5bd1a473fb9..5f770e0d93b 100644
--- a/server/src/main/java/org/elasticsearch/index/engine/InternalEngine.java
+++ b/server/src/main/java/org/elasticsearch/index/engine/InternalEngine.java
@@ -2561,7 +2561,7 @@ public class InternalEngine extends Engine {
         final long maxSeqNoOfUpdates = getMaxSeqNoOfUpdatesOrDeletes();
         // If the primary is on an old version which does not replicate msu, we need to relax this assertion for that.
         if (maxSeqNoOfUpdates == SequenceNumbers.UNASSIGNED_SEQ_NO) {
-            assert config().getIndexSettings().getIndexVersionCreated().before(Version.V_7_0_0_alpha1);
+            assert config().getIndexSettings().getIndexVersionCreated().before(Version.V_6_5_0);
             return true;
         }
         // We treat a delete on the tombstones on replicas as a regular document, then use updateDocument (not addDocument).
diff --git a/server/src/main/java/org/elasticsearch/index/shard/IndexShard.java b/server/src/main/java/org/elasticsearch/index/shard/IndexShard.java
index 28ff3c93096..11d8f44bef1 100644
--- a/server/src/main/java/org/elasticsearch/index/shard/IndexShard.java
+++ b/server/src/main/java/org/elasticsearch/index/shard/IndexShard.java
@@ -504,7 +504,7 @@ public class IndexShard extends AbstractIndexShardComponent implements IndicesCl
                                 if (getMaxSeqNoOfUpdatesOrDeletes() == SequenceNumbers.UNASSIGNED_SEQ_NO) {
                                     // If the old primary was on an old version that did not replicate the msu,
                                     // we need to bootstrap it manually from its local history.
-                                    assert indexSettings.getIndexVersionCreated().before(Version.V_7_0_0_alpha1);
+                                    assert indexSettings.getIndexVersionCreated().before(Version.V_6_5_0);
                                     engine.advanceMaxSeqNoOfUpdatesOrDeletes(seqNoStats().getMaxSeqNo());
                                 }
                                 engine.restoreLocalHistoryFromTranslog((resettingEngine, snapshot) ->
@@ -1957,7 +1957,7 @@ public class IndexShard extends AbstractIndexShardComponent implements IndicesCl
             if (getMaxSeqNoOfUpdatesOrDeletes() == SequenceNumbers.UNASSIGNED_SEQ_NO) {
                 // If the old primary was on an old version that did not replicate the msu,
                 // we need to bootstrap it manually from its local history.
-                assert indexSettings.getIndexVersionCreated().before(Version.V_7_0_0_alpha1);
+                assert indexSettings.getIndexVersionCreated().before(Version.V_6_5_0);
                 getEngine().advanceMaxSeqNoOfUpdatesOrDeletes(seqNoStats().getMaxSeqNo());
             }
         }
diff --git a/server/src/main/java/org/elasticsearch/indices/recovery/RecoveryTranslogOperationsRequest.java b/server/src/main/java/org/elasticsearch/indices/recovery/RecoveryTranslogOperationsRequest.java
index 58b5fb927b5..0ae5d507eb3 100644
--- a/server/src/main/java/org/elasticsearch/indices/recovery/RecoveryTranslogOperationsRequest.java
+++ b/server/src/main/java/org/elasticsearch/indices/recovery/RecoveryTranslogOperationsRequest.java
@@ -89,7 +89,7 @@ public class RecoveryTranslogOperationsRequest extends TransportRequest {
         } else {
             maxSeenAutoIdTimestampOnPrimary = IndexRequest.UNSET_AUTO_GENERATED_TIMESTAMP;
         }
-        if (in.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+        if (in.getVersion().onOrAfter(Version.V_6_5_0)) {
             maxSeqNoOfUpdatesOrDeletesOnPrimary = in.readZLong();
         } else {
             // UNASSIGNED_SEQ_NO means uninitialized and replica won't enable optimization using seq_no
@@ -107,7 +107,7 @@ public class RecoveryTranslogOperationsRequest extends TransportRequest {
         if (out.getVersion().onOrAfter(Version.V_6_5_0)) {
             out.writeZLong(maxSeenAutoIdTimestampOnPrimary);
         }
-        if (out.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+        if (out.getVersion().onOrAfter(Version.V_6_5_0)) {
             out.writeZLong(maxSeqNoOfUpdatesOrDeletesOnPrimary);
         }
     }