使用logstash迁移ES集群遇到问题

ES和logstash 版本: 6.8.6
我想要使用 logstash 把一个 ES 集群中的数据迁移到另外一个同版本的集群中，在迁移时配置如下：
 

input {

  elasticsearch {

    hosts => ["****", "

****", "****"]

    index => "indexname"

    user => "username"

    password => "password"

    size => 1000

    scroll => "5m"

    docinfo => true

  }

}

filter {

  mutate {

    remove_field => ["@timestamp", "@version"]

  }

}

output {

  elasticsearch {

    hosts => [ "****", "****", "****" ]

    user => "username"

    password => "password"

    index => "%{[@metadata][_index]}"

    # document_type => "%{[@metadata][_type]}"

    document_id => "%{[@metadata][_id]}"

  }

}

迁移的过程中报了许多如下格式的错误，并且文档数量少了一些

[2020-08-28T11:52:31,708][WARN ][logstash.outputs.elasticsearch] Could not index event to Elasticsearch. {:status=>400, :action=>["index", {:_id=>"5758291441f

4ea8d3db34289", :_index=>"indexname", :_type=>"doc", :routing=>nil}, #<LogStash::Event:0x17db4dcc>], :response=>{"index"=>{"_index"=>"indexname", "_

type"=>"doc", "_id"=>"5758291441f4ea8d3db34289", "status"=>400, "error"=>{"type"=>"illegal_argument_exception", "reason"=>"mapper [weight] cannot be changed f

rom type [long] to [float]"}}}}

报错的 weight 字段在原ES中的类型是 float ，而新集群中却变成了  long 类型。
 
请问一下使用 logstash 做ES迁移能否将原来 index 的 mapping 定义直接迁移到新集群上，避免上面的错误发生。