diff --git a/dbms/src/Storages/StorageMergeTree.cpp b/dbms/src/Storages/StorageMergeTree.cpp
index e446a79a0b8..7f2c80713db 100644
--- a/dbms/src/Storages/StorageMergeTree.cpp
+++ b/dbms/src/Storages/StorageMergeTree.cpp
@@ -1042,6 +1042,7 @@ void StorageMergeTree::alterPartition(const ASTPtr & query, const PartitionComma
                     case PartitionCommand::MoveDestinationType::VOLUME:
                         movePartitionToVolume(command.partition, command.move_destination_name, command.part, context);
                         break;
+
                     case PartitionCommand::MoveDestinationType::TABLE:
                         checkPartitionCanBeDropped(command.partition);
                         String dest_database = command.to_database.empty() ? context.getCurrentDatabase() : command.to_database;
@@ -1231,7 +1232,7 @@ void StorageMergeTree::movePartitionToTable(const StoragePtr & dest_table, const
 
     auto dest_table_storage = std::dynamic_pointer_cast<StorageMergeTree>(dest_table);
     if (!dest_table_storage)
-        throw Exception("Table " + getStorageID().getNameForLogs() + " supports attachPartitionFrom only for MergeTree family of table engines."
+        throw Exception("Table " + getStorageID().getNameForLogs() + " supports movePartitionToTable only for MergeTree family of table engines."
                         " Got " + dest_table->getName(), ErrorCodes::NOT_IMPLEMENTED);
     if (dest_table_storage->getStoragePolicy() != this->getStoragePolicy())
         throw Exception("Destination table " + dest_table_storage->getStorageID().getNameForLogs() +
@@ -1246,13 +1247,13 @@ void StorageMergeTree::movePartitionToTable(const StoragePtr & dest_table, const
     DataPartsVector src_parts = src_data.getDataPartsVectorInPartition(MergeTreeDataPartState::Committed, partition_id);
     MutableDataPartsVector dst_parts;
 
-    static const String TMP_PREFIX = "tmp_replace_from_";
+    static const String TMP_PREFIX = "tmp_move_from_";
 
     for (const DataPartPtr & src_part : src_parts)
     {
         if (!dest_table_storage->canReplacePartition(src_part))
             throw Exception(
-                "Cannot replace partition '" + partition_id + "' because part '" + src_part->name + "' has inconsistent granularity with table",
+                "Cannot move partition '" + partition_id + "' because part '" + src_part->name + "' has inconsistent granularity with table",
                 ErrorCodes::LOGICAL_ERROR);
 
         /// This will generate unique name in scope of current server process.
@@ -1263,18 +1264,11 @@ void StorageMergeTree::movePartitionToTable(const StoragePtr & dest_table, const
         dst_parts.emplace_back(dest_table_storage->cloneAndLoadDataPartOnSameDisk(src_part, TMP_PREFIX, dst_part_info));
     }
 
-    /// ATTACH empty part set
+    /// empty part set
     if (dst_parts.empty())
         return;
 
-    MergeTreePartInfo drop_range;
-
-    drop_range.partition_id = partition_id;
-    drop_range.min_block = 0;
-    drop_range.max_block = increment.get(); // there will be a "hole" in block numbers
-    drop_range.level = std::numeric_limits<decltype(drop_range.level)>::max();
-
-    /// Atomically add new parts and remove old ones
+    /// Move new parts to the destination table. NOTE It doesn't look atomic.
     try
     {
         {
diff --git a/dbms/src/Storages/StorageReplicatedMergeTree.cpp b/dbms/src/Storages/StorageReplicatedMergeTree.cpp
index d567573d09d..f5cc0f39861 100644
--- a/dbms/src/Storages/StorageReplicatedMergeTree.cpp
+++ b/dbms/src/Storages/StorageReplicatedMergeTree.cpp
@@ -3551,9 +3551,11 @@ void StorageReplicatedMergeTree::alterPartition(const ASTPtr & query, const Part
                     case PartitionCommand::MoveDestinationType::DISK:
                         movePartitionToDisk(command.partition, command.move_destination_name, command.part, query_context);
                         break;
+
                     case PartitionCommand::MoveDestinationType::VOLUME:
                         movePartitionToVolume(command.partition, command.move_destination_name, command.part, query_context);
                         break;
+
                     case PartitionCommand::MoveDestinationType::TABLE:
                         checkPartitionCanBeDropped(command.partition);
                         String dest_database = command.to_database.empty() ? query_context.getCurrentDatabase() : command.to_database;
@@ -5118,7 +5120,7 @@ void StorageReplicatedMergeTree::movePartitionToTable(const StoragePtr & dest_ta
 
     auto dest_table_storage = std::dynamic_pointer_cast<StorageReplicatedMergeTree>(dest_table);
     if (!dest_table_storage)
-        throw Exception("Table " + getStorageID().getNameForLogs() + " supports attachPartitionFrom only for ReplicatedMergeTree family of table engines."
+        throw Exception("Table " + getStorageID().getNameForLogs() + " supports movePartitionToTable only for ReplicatedMergeTree family of table engines."
                         " Got " + dest_table->getName(), ErrorCodes::NOT_IMPLEMENTED);
     if (dest_table_storage->getStoragePolicy() != this->getStoragePolicy())
         throw Exception("Destination table " + dest_table_storage->getStorageID().getNameForLogs() +
@@ -5140,9 +5142,11 @@ void StorageReplicatedMergeTree::movePartitionToTable(const StoragePtr & dest_ta
 
     LOG_DEBUG(log, "Cloning " << src_all_parts.size() << " parts");
 
-    static const String TMP_PREFIX = "tmp_replace_from_";
+    static const String TMP_PREFIX = "tmp_move_from_";
     auto zookeeper = getZooKeeper();
 
+    /// A range for log entry to remove parts from the source table (myself).
+
     MergeTreePartInfo drop_range;
     drop_range.partition_id = partition_id;
     drop_range.max_block = allocateBlockNumber(partition_id, zookeeper)->getNumber();
@@ -5157,13 +5161,15 @@ void StorageReplicatedMergeTree::movePartitionToTable(const StoragePtr & dest_ta
         queue.disableMergesInBlockRange(drop_range_fake_part_name);
     }
 
+    /// Clone parts into destination table.
+
     for (size_t i = 0; i < src_all_parts.size(); ++i)
     {
         auto & src_part = src_all_parts[i];
 
         if (!dest_table_storage->canReplacePartition(src_part))
             throw Exception(
-                "Cannot replace partition '" + partition_id + "' because part '" + src_part->name + "' has inconsistent granularity with table",
+                "Cannot move partition '" + partition_id + "' because part '" + src_part->name + "' has inconsistent granularity with table",
                 ErrorCodes::LOGICAL_ERROR);
 
         String hash_hex = src_part->checksums.getTotalChecksumHex();