diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14a9bab4ba04e..bdd283cc1f7a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,98 +5,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased 3.x]
 ### Added
-- [Feature Request] Enhance Terms lookup query to support query clause instead of docId ([#18195](https://github.com/opensearch-project/OpenSearch/issues/18195))
-- Add hierarchical routing processors for ingest and search pipelines ([#18826](https://github.com/opensearch-project/OpenSearch/pull/18826))
-- Add ACL-aware routing processors for ingest and search pipelines ([#18834](https://github.com/opensearch-project/OpenSearch/pull/18834))
-- Add support for Warm Indices Write Block on Flood Watermark breach ([#18375](https://github.com/opensearch-project/OpenSearch/pull/18375))
-- FS stats for warm nodes based on addressable space ([#18767](https://github.com/opensearch-project/OpenSearch/pull/18767))
-- Add support for custom index name resolver from cluster plugin ([#18593](https://github.com/opensearch-project/OpenSearch/pull/18593))
-- Rename WorkloadGroupTestUtil to WorkloadManagementTestUtil ([#18709](https://github.com/opensearch-project/OpenSearch/pull/18709))
-- Disallow resize for Warm Index, add Parameterized ITs for close in remote store ([#18686](https://github.com/opensearch-project/OpenSearch/pull/18686))
-- Ability to run Code Coverage with Gradle and produce the jacoco reports locally ([#18509](https://github.com/opensearch-project/OpenSearch/issues/18509))
-- Extend BooleanQuery must_not rewrite to numeric must, term, and terms queries ([#18498](https://github.com/opensearch-project/OpenSearch/pull/18498))
-- [Workload Management] Update logging and Javadoc, rename QueryGroup to WorkloadGroup ([#18711](https://github.com/opensearch-project/OpenSearch/issues/18711))
-- Add NodeResourceUsageStats to ClusterInfo ([#18480](https://github.com/opensearch-project/OpenSearch/issues/18472))
-- Introduce SecureHttpTransportParameters experimental API (to complement SecureTransportParameters counterpart) ([#18572](https://github.com/opensearch-project/OpenSearch/issues/18572))
-- Create equivalents of JSM's AccessController in the java agent ([#18346](https://github.com/opensearch-project/OpenSearch/issues/18346))
-- [WLM] Add WLM mode validation for workload group CRUD requests ([#18652](https://github.com/opensearch-project/OpenSearch/issues/18652))
-- Introduced a new cluster-level API to fetch remote store metadata (segments and translogs) for each shard of an index. ([#18257](https://github.com/opensearch-project/OpenSearch/pull/18257))
-- Add last index request timestamp columns to the `_cat/indices` API. ([10766](https://github.com/opensearch-project/OpenSearch/issues/10766))
-- Introduce a new pull-based ingestion plugin for file-based indexing (for local testing) ([#18591](https://github.com/opensearch-project/OpenSearch/pull/18591))
-- Add support for search pipeline in search and msearch template ([#18564](https://github.com/opensearch-project/OpenSearch/pull/18564))
-- [Workload Management] Modify logging message in WorkloadGroupService ([#18712](https://github.com/opensearch-project/OpenSearch/pull/18712))
-- Add BooleanQuery rewrite moving constant-scoring must clauses to filter clauses ([#18510](https://github.com/opensearch-project/OpenSearch/issues/18510))
-- Add functionality for plugins to inject QueryCollectorContext during QueryPhase ([#18637](https://github.com/opensearch-project/OpenSearch/pull/18637))
-- Add support for non-timing info in profiler ([#18460](https://github.com/opensearch-project/OpenSearch/issues/18460))
-- [Rule-based auto tagging] Bug fix and improvements ([#18726](https://github.com/opensearch-project/OpenSearch/pull/18726))
-- Extend Approximation Framework to other numeric types ([#18530](https://github.com/opensearch-project/OpenSearch/issues/18530))
-- Add Semantic Version field type mapper and extensive unit tests([#18454](https://github.com/opensearch-project/OpenSearch/pull/18454))
-- Pass index settings to system ingest processor factories. ([#18708](https://github.com/opensearch-project/OpenSearch/pull/18708))
-- Add fetch phase profiling. ([#18664](https://github.com/opensearch-project/OpenSearch/pull/18664))
-- Include named queries from rescore contexts in matched_queries array ([#18697](https://github.com/opensearch-project/OpenSearch/pull/18697))
-- Add the configurable limit on rule cardinality ([#18663](https://github.com/opensearch-project/OpenSearch/pull/18663))
-- Optimization in Numeric Terms Aggregation query for Large Bucket Counts([#18702](https://github.com/opensearch-project/OpenSearch/pull/18702))
-- Disable approximation framework when dealing with multiple sorts ([#18763](https://github.com/opensearch-project/OpenSearch/pull/18763))
-- [Experimental] Start in "clusterless" mode if a clusterless ClusterPlugin is loaded ([#18479](https://github.com/opensearch-project/OpenSearch/pull/18479))
-- [Star-Tree] Add star-tree search related stats ([#18707](https://github.com/opensearch-project/OpenSearch/pull/18707))
-- Add support for plugins to profile information ([#18656](https://github.com/opensearch-project/OpenSearch/pull/18656))
-- Add support for Combined Fields query ([#18724](https://github.com/opensearch-project/OpenSearch/pull/18724))
-- Make GRPC transport extensible to allow plugins to register and expose their own GRPC services ([#18516](https://github.com/opensearch-project/OpenSearch/pull/18516))
-- Added approximation support for range queries with now in date field ([#18511](https://github.com/opensearch-project/OpenSearch/pull/18511))
-- Upgrade to protobufs 0.6.0 and clean up deprecated TermQueryProtoUtils code ([#18880](https://github.com/opensearch-project/OpenSearch/pull/18880))
-- Expand fetch phase profiling to multi-shard queries ([#18887](https://github.com/opensearch-project/OpenSearch/pull/18887))
-- Prevent shard initialization failure due to streaming consumer errors ([#18877](https://github.com/opensearch-project/OpenSearch/pull/18877))
-- APIs for stream transport and new stream-based search api action ([#18722](https://github.com/opensearch-project/OpenSearch/pull/18722))
-- Add support for custom remote store segment path prefix to support clusterless configurations ([#18750](https://github.com/opensearch-project/OpenSearch/issues/18750))
-- Added the core process for warming merged segments in remote-store enabled domains ([#18683](https://github.com/opensearch-project/OpenSearch/pull/18683))
-- Streaming aggregation ([#18874](https://github.com/opensearch-project/OpenSearch/pull/18874))
-- Optimize Composite Aggregations by removing unnecessary object allocations ([#18531](https://github.com/opensearch-project/OpenSearch/pull/18531))
-- [Star-Tree] Add search support for ip field type ([#18671](https://github.com/opensearch-project/OpenSearch/pull/18671))
-- [Derived Source] Add integration of derived source feature across various paths like get/search/recovery ([#18565](https://github.com/opensearch-project/OpenSearch/pull/18565))
-- Supporting Scripted Metric Aggregation when reducing aggregations in InternalValueCount and InternalAvg ([18411](https://github.com/opensearch-project/OpenSearch/pull18411)))
-- Support `search_after` numeric queries with Approximation Framework ([#18896](https://github.com/opensearch-project/OpenSearch/pull/18896))
-- Add skip_list parameter to Numeric Field Mappers (default false) ([#18889](https://github.com/opensearch-project/OpenSearch/pull/18889))
-- Map to proper GRPC status codes and achieve exception handling parity with HTTP APIs([#18925](https://github.com/opensearch-project/OpenSearch/pull/18925))
 
 ### Changed
-- Update Subject interface to use CheckedRunnable ([#18570](https://github.com/opensearch-project/OpenSearch/issues/18570))
-- Update SecureAuxTransportSettingsProvider to distinguish between aux transport types ([#18616](https://github.com/opensearch-project/OpenSearch/pull/18616))
-- Make node duress values cacheable ([#18649](https://github.com/opensearch-project/OpenSearch/pull/18649))
-- Change default value of remote_data_ratio, which is used in Searchable Snapshots and Writeable Warm from 0 to 5 and min allowed value to 1 ([#18767](https://github.com/opensearch-project/OpenSearch/pull/18767))
-- Making multi rate limiters in repository dynamic [#18069](https://github.com/opensearch-project/OpenSearch/pull/18069)
-- Optimize grouping for segment concurrent search by ensuring that documents within each group are as equal as possible ([#18451](https://github.com/opensearch-project/OpenSearch/pull/18451))
-- Move transport-grpc from a core plugin to a module ([#18897](https://github.com/opensearch-project/OpenSearch/pull/18897))
-- Remove `experimental` designation from transport-grpc settings ([#18915](https://github.com/opensearch-project/OpenSearch/pull/18915))
-- Rename package org.opensearch.plugin,transport.grpc to org.opensearch.transport.grpc ([#18923](https://github.com/opensearch-project/OpenSearch/pull/18923))
 
 ### Fixed
 - Fix unnecessary refreshes on update preparation failures ([#15261](https://github.com/opensearch-project/OpenSearch/issues/15261))
 
 ### Dependencies
-- Bump `stefanzweifel/git-auto-commit-action` from 5 to 6 ([#18524](https://github.com/opensearch-project/OpenSearch/pull/18524))
-- Bump Apache Lucene to 10.2.2 ([#18573](https://github.com/opensearch-project/OpenSearch/pull/18573))
-- Bump `org.apache.logging.log4j:log4j-core` from 2.24.3 to 2.25.1 ([#18589](https://github.com/opensearch-project/OpenSearch/pull/18589), [#18744](https://github.com/opensearch-project/OpenSearch/pull/18744))
-- Bump `com.google.code.gson:gson` from 2.13.0 to 2.13.1 ([#18585](https://github.com/opensearch-project/OpenSearch/pull/18585))
-- Bump `com.azure:azure-core-http-netty` from 1.15.11 to 1.15.12 ([#18586](https://github.com/opensearch-project/OpenSearch/pull/18586))
-- Bump `com.squareup.okio:okio` from 3.13.0 to 3.15.0 ([#18645](https://github.com/opensearch-project/OpenSearch/pull/18645), [#18689](https://github.com/opensearch-project/OpenSearch/pull/18689))
-- Bump `com.netflix.nebula.ospackage-base` from 11.11.2 to 12.0.0 ([#18646](https://github.com/opensearch-project/OpenSearch/pull/18646))
-- Bump `com.azure:azure-storage-blob` from 12.30.0 to 12.30.1 ([#18644](https://github.com/opensearch-project/OpenSearch/pull/18644))
-- Bump `com.google.guava:failureaccess` from 1.0.1 to 1.0.2 ([#18672](https://github.com/opensearch-project/OpenSearch/pull/18672))
-- Bump `io.perfmark:perfmark-api` from 0.26.0 to 0.27.0 ([#18672](https://github.com/opensearch-project/OpenSearch/pull/18672))
-- Bump `org.bouncycastle:bctls-fips` from 2.0.19 to 2.0.20 ([#18668](https://github.com/opensearch-project/OpenSearch/pull/18668))
-- Bump `org.bouncycastle:bcpkix-fips` from 2.0.7 to 2.0.8 ([#18668](https://github.com/opensearch-project/OpenSearch/pull/18668))
-- Bump `org.bouncycastle:bcpg-fips` from 2.0.10 to 2.0.11 ([#18668](https://github.com/opensearch-project/OpenSearch/pull/18668))
-- Bump `com.password4j:password4j` from 1.8.2 to 1.8.3 ([#18668](https://github.com/opensearch-project/OpenSearch/pull/18668))
-- Bump `com.azure:azure-core` from 1.55.3 to 1.55.5 ([#18691](https://github.com/opensearch-project/OpenSearch/pull/18691))
-- Bump `com.squareup.okhttp3:okhttp` from 4.12.0 to 5.1.0 ([#18749](https://github.com/opensearch-project/OpenSearch/pull/18749))
-- Bump `com.google.jimfs:jimfs` from 1.3.0 to 1.3.1 ([#18743](https://github.com/opensearch-project/OpenSearch/pull/18743)), [#18746](https://github.com/opensearch-project/OpenSearch/pull/18746)), [#18748](https://github.com/opensearch-project/OpenSearch/pull/18748))
-- Bump `com.azure:azure-storage-common` from 12.29.0 to 12.29.1 ([#18742](https://github.com/opensearch-project/OpenSearch/pull/18742))
-- Bump `org.apache.commons:commons-lang3` from 3.17.0 to 3.18.0 ([#18745](https://github.com/opensearch-project/OpenSearch/pull/18745)), ([#18955](https://github.com/opensearch-project/OpenSearch/pull/18955))
-- Bump `com.nimbusds:nimbus-jose-jwt` from 10.2 to 10.4 ([#18759](https://github.com/opensearch-project/OpenSearch/pull/18759), [#18804](https://github.com/opensearch-project/OpenSearch/pull/18804))
-- Bump `commons-beanutils:commons-beanutils` from 1.9.4 to 1.11.0 ([#18401](https://github.com/opensearch-project/OpenSearch/issues/18401))
-- Bump `org.xerial.snappy:snappy-java` from 1.1.10.7 to 1.1.10.8 ([#18803](https://github.com/opensearch-project/OpenSearch/pull/18803))
-- Bump `org.ajoberstar.grgit:grgit-core` from 5.2.1 to 5.3.2 ([#18935](https://github.com/opensearch-project/OpenSearch/pull/18935))
-- Bump `org.apache.kafka:kafka-clients` from 3.8.1 to 3.9.1 ([#18935](https://github.com/opensearch-project/OpenSearch/pull/18935))
 
 ### Deprecated
 
@@ -104,28 +19,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ### Fixed
 - Fix flaky tests in CloseIndexIT by addressing cluster state synchronization issues ([#18878](https://github.com/opensearch-project/OpenSearch/issues/18878))
-- Add task cancellation checks in aggregators ([#18426](https://github.com/opensearch-project/OpenSearch/pull/18426))
-- Fix concurrent timings in profiler ([#18540](https://github.com/opensearch-project/OpenSearch/pull/18540))
-- Fix regex query from query string query to work with field alias ([#18215](https://github.com/opensearch-project/OpenSearch/issues/18215))
-- [Autotagging] Fix delete rule event consumption in InMemoryRuleProcessingService ([#18628](https://github.com/opensearch-project/OpenSearch/pull/18628))
-- Cannot communicate with HTTP/2 when reactor-netty is enabled ([#18599](https://github.com/opensearch-project/OpenSearch/pull/18599))
-- Fix the visit of sub queries for HasParentQuery and HasChildQuery ([#18621](https://github.com/opensearch-project/OpenSearch/pull/18621))
-- Fix the backward compatibility regression with COMPLEMENT for Regexp queries introduced in OpenSearch 3.0 ([#18640](https://github.com/opensearch-project/OpenSearch/pull/18640))
-- Fix Replication lag computation ([#18602](https://github.com/opensearch-project/OpenSearch/pull/18602))
-- Fix max_score is null when sorting on score firstly ([#18715](https://github.com/opensearch-project/OpenSearch/pull/18715))
-- Field-level ignore_malformed should override index-level setting ([#18706](https://github.com/opensearch-project/OpenSearch/pull/18706))
-- Fixed Staggered merge -  load average replace with AverageTrackers, some Default thresholds modified ([#18666](https://github.com/opensearch-project/OpenSearch/pull/18666))
-- Use `new SecureRandom()` to avoid blocking ([18729](https://github.com/opensearch-project/OpenSearch/issues/18729))
-- Ignore archived settings on update ([#8714](https://github.com/opensearch-project/OpenSearch/issues/8714))
-- Ignore awareness attributes when a custom preference string is included with a search request ([#18848](https://github.com/opensearch-project/OpenSearch/pull/18848))
-- Use ScoreDoc instead of FieldDoc when creating TopScoreDocCollectorManager to avoid unnecessary conversion ([#18802](https://github.com/opensearch-project/OpenSearch/pull/18802))
-- Fix leafSorter optimization for ReadOnlyEngine and NRTReplicationEngine ([#18639](https://github.com/opensearch-project/OpenSearch/pull/18639))
-- Close IndexFieldDataService asynchronously ([#18888](https://github.com/opensearch-project/OpenSearch/pull/18888))
-- Fix query string regex queries incorrectly swallowing TooComplexToDeterminizeException ([#18883](https://github.com/opensearch-project/OpenSearch/pull/18883))
-- Fix socks5 user password settings for Azure repo ([#18904](https://github.com/opensearch-project/OpenSearch/pull/18904))
-- Fix gRPC transport SETTING_GRPC_MAX_MSG_SIZE setting not exposed to users ([#18910](https://github.com/opensearch-project/OpenSearch/pull/18910))
-- Reset isPipelineResolved to false to resolve the system ingest pipeline again. ([#18911](https://github.com/opensearch-project/OpenSearch/pull/18911))
-- Bug fix for `scaled_float` in `encodePoint` method ([#18952](https://github.com/opensearch-project/OpenSearch/pull/18952))
 
 ### Security