What happens if I update the couch base document whether the Couchbase kafka connector write to the topic as a new record?

I read 10 documents from Couchbase using kafka source connector and write it to a kafka topic. If I update one of the 10 documents in couchbase, I know that the kafka connector will read the updated document from couchbase and write it to the kafka topic.

Will it update the existing record in the kafka topic or will it create a new record in the kafka topic?

It will create a new record.