Terraform AWS elastic search version upgrade to Opensearch 1.0

Hi @tyburczyk and @Mohankumarmb91,

This is what I see when I execute terraform plan (quite scary)

resource "aws_elasticsearch_domain" "default" {
  ...
        ~ elasticsearch_version = "7.9" -> "OS_1.1" # forces replacement
}

Can anyone confirm that terraform apply performs an upgrade, and won’t delete and re-create the whole cluster?