Elasticsearch Input on Logstash

Dear Elastic Team,

I have a case where i need to sync all of the documents from 1 index to another elastic cluster with near real-time.
I'm thinking using logstash elasticsearch input to read all of the documents continuously every minute to sync the doc.
The thing is, the data that i want to sync is not timeseries data (without timestamp), it's a transactional data. So the document is usually get updated based on _id field whenever the changes happen to the document.
My question is, can logstash read the document when they got updated and replaced the document on the new cluster ?

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