"forces replacement": the Terraform plan line nobody reads

Line 267 of a 427-line Terraform plan:

# aws_rds_cluster.reporting must be replaced

-/+ resource "aws_rds_cluster" "reporting" {

~ arn = "arn:aws:rds:us-east-1:842910557412:cluster:reporting" -> (known after apply)

~ cluster_resource_id = "cluster-D85642F9611A" -> (known after apply)