**How to reproduce**
Clickhouse server 20.13.1.5273
```
CREATE TABLE default.test
(
`key` UInt32,
`ts` DateTime CODEC(DoubleDelta, LZ4),
`db_time` DateTime DEFAULT now() COMMENT 'spout-ignore' CODEC(DoubleDelta, LZ4)
)
ENGINE = MergeTree
PARTITION BY toStartOfTenMinutes(db_time)
ORDER BY (key, ts)
TTL db_time + toIntervalHour(3)
SETTINGS index_granularity = 8192, merge_with_ttl_timeout = 3600, min_rows_for_compact_part = 1000000, min_bytes_for_compact_part = 200000000, in_memory_parts_enable_wal = 0;


INSERT INTO test(key, ts) SELECT number % 1000, now() + intDiv(number,1000) FROM numbers(500);

SELECT * FROM test;
500 rows in set. Elapsed: 0.003 sec.

DETACH TABLE test;

ATTACH TABLE test;

SELECT * FROM test;

0 rows in set. Elapsed: 0.002 sec.
```

**Expected behavior**
Clickhouse would flush parts on disk.
break;
            case PartitionCommand::ATTACH_PARTITION:
                current_command_results = attachPartition(command.partition, metadata_snapshot, command.part, query_context);
                break;
            case PartitionCommand::MOVE_PARTITION:
            {
                switch (*command.move_destination_type)
                {
                    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:
                    {
                        String dest_database = query_context->resolveDatabase(command.to_database);
                        auto dest_storage = DatabaseCatalog::instance().getTable({dest_database, command.to_table}, query_context);
                        movePartitionToTable(dest_storage, command.partition, query_context);
                    }
                    break;
                    case PartitionCommand::MoveDestinationType::SHARD:
                    {
                        if (!getSettings()->part_moves_between_shards_enable)
                            throw Exception(ErrorCodes::SUPPORT_IS_DISABLED,
                                            "Moving parts between shards is experimental and work in progress"
                                            ", see part_moves_between_shards_enable setting");
                        movePartitionToShard(command.partition, command.part, command.move_destination_name, query_context);
                    }
                    break;