diff --git a/ydb/core/tx/columnshard/engines/insert_table/committed.h b/ydb/core/tx/columnshard/engines/insert_table/committed.h
index ed2ffdadb3ca..bd633647b5ec 100644
--- a/ydb/core/tx/columnshard/engines/insert_table/committed.h
+++ b/ydb/core/tx/columnshard/engines/insert_table/committed.h
@@ -56,27 +56,24 @@ class TCommittedBlob {
     YDB_READONLY(ui64, SchemaVersion, 0);
     YDB_READONLY(ui64, RecordsCount, 0);
     YDB_READONLY(bool, IsDelete, false);
-    YDB_READONLY_DEF(std::optional<NArrow::TReplaceKey>, First);
-    YDB_READONLY_DEF(std::optional<NArrow::TReplaceKey>, Last);
+    NArrow::TReplaceKey First;
+    NArrow::TReplaceKey Last;
     YDB_READONLY_DEF(NArrow::TSchemaSubset, SchemaSubset);
 
 public:
-    ui64 GetSize() const {
-        return BlobRange.Size;
+    const NArrow::TReplaceKey& GetFirst() const {
+        return First;
     }
-
-    const NArrow::TReplaceKey& GetFirstVerified() const {
-        Y_ABORT_UNLESS(First);
-        return *First;
+    const NArrow::TReplaceKey& GetLast() const {
+        return Last;
     }
 
-    const NArrow::TReplaceKey& GetLastVerified() const {
-        Y_ABORT_UNLESS(Last);
-        return *Last;
+    ui64 GetSize() const {
+        return BlobRange.Size;
     }
 
     TCommittedBlob(const TBlobRange& blobRange, const TSnapshot& snapshot, const ui64 schemaVersion, const ui64 recordsCount,
-        const std::optional<NArrow::TReplaceKey>& first, const std::optional<NArrow::TReplaceKey>& last, const bool isDelete,
+        const NArrow::TReplaceKey& first, const NArrow::TReplaceKey& last, const bool isDelete,
         const NArrow::TSchemaSubset& subset)
         : BlobRange(blobRange)
         , WriteInfo(snapshot)
@@ -89,7 +86,7 @@ class TCommittedBlob {
     }
 
     TCommittedBlob(const TBlobRange& blobRange, const TInsertWriteId writeId, const ui64 schemaVersion, const ui64 recordsCount,
-        const std::optional<NArrow::TReplaceKey>& first, const std::optional<NArrow::TReplaceKey>& last, const bool isDelete,
+        const NArrow::TReplaceKey& first, const NArrow::TReplaceKey& last, const bool isDelete,
         const NArrow::TSchemaSubset& subset)
         : BlobRange(blobRange)
         , WriteInfo(writeId)
diff --git a/ydb/core/tx/columnshard/engines/insert_table/insert_table.cpp b/ydb/core/tx/columnshard/engines/insert_table/insert_table.cpp
index a948c0077077..18e69a2b0f55 100644
--- a/ydb/core/tx/columnshard/engines/insert_table/insert_table.cpp
+++ b/ydb/core/tx/columnshard/engines/insert_table/insert_table.cpp
@@ -13,6 +13,7 @@ bool TInsertTable::Insert(IDbWrapper& dbTable, TInsertedData&& data) {
         dbTable.Insert(*dataPtr);
         return true;
     } else {
+        AFL_WARN(NKikimrServices::TX_COLUMNSHARD)("event", "skip_insertion");
         return false;
     }
 }
@@ -39,11 +40,15 @@ TInsertionSummary::TCounters TInsertTable::Commit(
         auto* pathInfo = Summary.GetPathInfoOptional(pathId);
         // There could be commit after drop: propose, drop, plan
         if (pathInfo && pathExists(pathId)) {
+            AFL_TRACE(NKikimrServices::TX_COLUMNSHARD)("event", "commit_insertion")("path_id", data->GetPathId())(
+                "blob_range", data->GetBlobRange().ToString());
             auto committed = data->Commit(planStep, txId);
             dbTable.Commit(committed);
 
             pathInfo->AddCommitted(std::move(committed));
         } else {
+            AFL_WARN(NKikimrServices::TX_COLUMNSHARD)("event", "abort_insertion")("path_id", data->GetPathId())(
+                "blob_range", data->GetBlobRange().ToString());
             dbTable.Abort(*data);
             Summary.AddAborted(std::move(*data));
         }
@@ -58,6 +63,8 @@ void TInsertTable::Abort(IDbWrapper& dbTable, const THashSet<TInsertWriteId>& wr
     for (auto writeId : writeIds) {
         // There could be inconsistency with txs and writes in case of bugs. So we could find no record for writeId.
         if (std::optional<TInsertedData> data = Summary.ExtractInserted(writeId)) {
+            AFL_TRACE(NKikimrServices::TX_COLUMNSHARD)("event", "abort_insertion")("path_id", data->GetPathId())(
+                "blob_range", data->GetBlobRange().ToString())("write_id", writeId);
             dbTable.EraseInserted(*data);
             dbTable.Abort(*data);
             Summary.AddAborted(std::move(*data));
@@ -108,8 +115,8 @@ bool TInsertTable::Load(NIceDb::TNiceDb& db, IDbWrapper& dbTable, const TInstant
     return dbTable.Load(*this, loadTime);
 }
 
-std::vector<TCommittedBlob> TInsertTable::Read(
-    ui64 pathId, const std::optional<ui64> lockId, const TSnapshot& reqSnapshot, const std::shared_ptr<arrow::Schema>& pkSchema) const {
+std::vector<TCommittedBlob> TInsertTable::Read(ui64 pathId, const std::optional<ui64> lockId, const TSnapshot& reqSnapshot,
+    const std::shared_ptr<arrow::Schema>& pkSchema, const TPKRangesFilter* pkRangesFilter) const {
     const TPathInfo* pInfo = Summary.GetPathInfoOptional(pathId);
     if (!pInfo) {
         return {};
@@ -120,15 +127,27 @@ std::vector<TCommittedBlob> TInsertTable::Read(
 
     for (const auto& data : pInfo->GetCommitted()) {
         if (lockId || data.GetSnapshot() <= reqSnapshot) {
+            auto start = data.GetMeta().GetFirstPK(pkSchema);
+            auto finish = data.GetMeta().GetLastPK(pkSchema);
+            AFL_VERIFY(start);
+            AFL_VERIFY(finish);
+            if (pkRangesFilter && pkRangesFilter->IsPortionInPartialUsage(*start, *finish) == TPKRangeFilter::EUsageClass::DontUsage) {
+                continue;
+            }
             result.emplace_back(TCommittedBlob(data.GetBlobRange(), data.GetSnapshot(), data.GetSchemaVersion(), data.GetMeta().GetNumRows(),
-                data.GetMeta().GetFirstPK(pkSchema), data.GetMeta().GetLastPK(pkSchema),
-                data.GetMeta().GetModificationType() == NEvWrite::EModificationType::Delete, data.GetMeta().GetSchemaSubset()));
+                *start, *finish, data.GetMeta().GetModificationType() == NEvWrite::EModificationType::Delete, data.GetMeta().GetSchemaSubset()));
         }
     }
     if (lockId) {
         for (const auto& [writeId, data] : pInfo->GetInserted()) {
-            result.emplace_back(TCommittedBlob(data.GetBlobRange(), writeId, data.GetSchemaVersion(), data.GetMeta().GetNumRows(),
-                data.GetMeta().GetFirstPK(pkSchema), data.GetMeta().GetLastPK(pkSchema),
+            auto start = data.GetMeta().GetFirstPK(pkSchema);
+            auto finish = data.GetMeta().GetLastPK(pkSchema);
+            AFL_VERIFY(start);
+            AFL_VERIFY(finish);
+            if (pkRangesFilter && pkRangesFilter->IsPortionInPartialUsage(*start, *finish) == TPKRangeFilter::EUsageClass::DontUsage) {
+                continue;
+            }
+            result.emplace_back(TCommittedBlob(data.GetBlobRange(), writeId, data.GetSchemaVersion(), data.GetMeta().GetNumRows(), *start, *finish,
                 data.GetMeta().GetModificationType() == NEvWrite::EModificationType::Delete, data.GetMeta().GetSchemaSubset()));
         }
     }
diff --git a/ydb/core/tx/columnshard/engines/insert_table/insert_table.h b/ydb/core/tx/columnshard/engines/insert_table/insert_table.h
index 324cbbf87946..b44e64312191 100644
--- a/ydb/core/tx/columnshard/engines/insert_table/insert_table.h
+++ b/ydb/core/tx/columnshard/engines/insert_table/insert_table.h
@@ -9,7 +9,7 @@
 #include <ydb/core/tx/columnshard/counters/insert_table.h>
 
 namespace NKikimr::NOlap {
-
+class TPKRangesFilter;
 class IDbWrapper;
 
 /// Use one table for inserted and committed blobs:
@@ -57,6 +57,7 @@ class TInsertTableAccessor {
         return Summary.AddInserted(std::move(data), load);
     }
     bool AddAborted(TInsertedData&& data, const bool load) {
+        AFL_VERIFY_DEBUG(!Summary.ExtractInserted(data.GetInsertWriteId()));
         if (load) {
             AddBlobLink(data.GetBlobRange().BlobId);
         }
@@ -114,8 +115,8 @@ class TInsertTable: public TInsertTableAccessor {
     void EraseAbortedOnExecute(IDbWrapper& dbTable, const TInsertedData& key, const std::shared_ptr<IBlobsDeclareRemovingAction>& blobsAction);
     void EraseAbortedOnComplete(const TInsertedData& key);
 
-    std::vector<TCommittedBlob> Read(
-        ui64 pathId, const std::optional<ui64> lockId, const TSnapshot& reqSnapshot, const std::shared_ptr<arrow::Schema>& pkSchema) const;
+    std::vector<TCommittedBlob> Read(ui64 pathId, const std::optional<ui64> lockId, const TSnapshot& reqSnapshot,
+        const std::shared_ptr<arrow::Schema>& pkSchema, const TPKRangesFilter* pkRangesFilter) const;
     bool Load(NIceDb::TNiceDb& db, IDbWrapper& dbTable, const TInstant loadTime);
 
     TInsertWriteId BuildNextWriteId(NTabletFlatExecutor::TTransactionContext& txc);
diff --git a/ydb/core/tx/columnshard/engines/insert_table/rt_insertion.cpp b/ydb/core/tx/columnshard/engines/insert_table/rt_insertion.cpp
index 8012211c418e..3ad39fcd209e 100644
--- a/ydb/core/tx/columnshard/engines/insert_table/rt_insertion.cpp
+++ b/ydb/core/tx/columnshard/engines/insert_table/rt_insertion.cpp
@@ -166,8 +166,9 @@ bool TInsertionSummary::HasCommitted(const TCommittedData& data) {
 const NKikimr::NOlap::TInsertedData* TInsertionSummary::AddAborted(TInsertedData&& data, const bool load /*= false*/) {
     const TInsertWriteId writeId = data.GetInsertWriteId();
     Counters.Aborted.Add(data.BlobSize(), load);
+    AFL_VERIFY_DEBUG(!Inserted.contains(writeId));
     auto insertInfo = Aborted.emplace(writeId, std::move(data));
-    Y_ABORT_UNLESS(insertInfo.second);
+    AFL_VERIFY(insertInfo.second)("write_id", writeId);
     return &insertInfo.first->second;
 }
 
@@ -191,6 +192,7 @@ const NKikimr::NOlap::TInsertedData* TInsertionSummary::AddInserted(TInsertedDat
     const ui32 dataSize = data.BlobSize();
     const ui64 pathId = data.GetPathId();
     auto insertInfo = Inserted.emplace(writeId, std::move(data));
+    AFL_VERIFY_DEBUG(!Aborted.contains(writeId));
     if (insertInfo.second) {
         OnNewInserted(GetPathInfo(pathId), dataSize, load);
         return &insertInfo.first->second;
diff --git a/ydb/core/tx/columnshard/engines/reader/abstract/read_metadata.cpp b/ydb/core/tx/columnshard/engines/reader/abstract/read_metadata.cpp
index dd01511460c2..88416a4d214f 100644
--- a/ydb/core/tx/columnshard/engines/reader/abstract/read_metadata.cpp
+++ b/ydb/core/tx/columnshard/engines/reader/abstract/read_metadata.cpp
@@ -25,7 +25,8 @@ ISnapshotSchema::TPtr TReadMetadataBase::GetLoadSchemaVerified(const TPortionInf
 
 std::vector<TCommittedBlob> TDataStorageAccessor::GetCommitedBlobs(const TReadDescription& readDescription,
     const std::shared_ptr<arrow::Schema>& pkSchema, const std::optional<ui64> lockId, const TSnapshot& reqSnapshot) const {
-    return std::move(InsertTable->Read(readDescription.PathId, lockId, reqSnapshot, pkSchema));
+    AFL_VERIFY(readDescription.PKRangesFilter);
+    return std::move(InsertTable->Read(readDescription.PathId, lockId, reqSnapshot, pkSchema, &*readDescription.PKRangesFilter));
 }
 
 }   // namespace NKikimr::NOlap::NReader
diff --git a/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/plain_read_data.cpp b/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/plain_read_data.cpp
index ec228c363b90..04ed0d1c6f26 100644
--- a/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/plain_read_data.cpp
+++ b/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/plain_read_data.cpp
@@ -28,8 +28,8 @@ TPlainReadData::TPlainReadData(const std::shared_ptr<TReadContext>& context)
         if (GetReadMetadata()->IsMyUncommitted(i.GetWriteIdVerified())) {
             continue;
         }
-        if (GetReadMetadata()->GetPKRangesFilter().CheckPoint(i.GetFirstVerified()) ||
-            GetReadMetadata()->GetPKRangesFilter().CheckPoint(i.GetLastVerified())) {
+        if (GetReadMetadata()->GetPKRangesFilter().CheckPoint(i.GetFirst()) ||
+            GetReadMetadata()->GetPKRangesFilter().CheckPoint(i.GetLast())) {
             GetReadMetadata()->SetConflictedWriteId(i.GetWriteIdVerified());
         }
     }
@@ -39,7 +39,7 @@ TPlainReadData::TPlainReadData(const std::shared_ptr<TReadContext>& context)
             if (GetReadMetadata()->IsWriteConflictable(i.GetWriteIdVerified())) {
                 continue;
             }
-        } else if (GetReadMetadata()->GetPKRangesFilter().IsPortionInPartialUsage(i.GetFirstVerified(), i.GetLastVerified()) ==
+        } else if (GetReadMetadata()->GetPKRangesFilter().IsPortionInPartialUsage(i.GetFirst(), i.GetLast()) ==
                    TPKRangeFilter::EUsageClass::DontUsage) {
             continue;
         }
diff --git a/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/source.h b/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/source.h
index 8121c73a6296..879c42d142a6 100644
--- a/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/source.h
+++ b/ydb/core/tx/columnshard/engines/reader/plain_reader/iterator/source.h
@@ -456,9 +456,8 @@ class TCommittedDataSource: public IDataSource {
     }
 
     TCommittedDataSource(const ui32 sourceIdx, const TCommittedBlob& committed, const std::shared_ptr<TSpecialReadContext>& context)
-        : TBase(sourceIdx, context, committed.GetFirstVerified(), committed.GetLastVerified(), committed.GetSnapshotDef(TSnapshot::Zero()),
-              committed.GetSnapshotDef(TSnapshot::Zero()),
-              committed.GetRecordsCount(), {}, committed.GetIsDelete())
+        : TBase(sourceIdx, context, committed.GetFirst(), committed.GetLast(), committed.GetSnapshotDef(TSnapshot::Zero()),
+              committed.GetSnapshotDef(TSnapshot::Zero()), committed.GetRecordsCount(), {}, committed.GetIsDelete())
         , CommittedBlob(committed) {
     }
 };