fsx ontap SVM Requires Replacement due to domain_name Case Changes

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Terraform CLI and Terraform AWS Provider Version

I am using Terraform 1.0.11 with 3.70.0 as the AWS provider.

Affected Resource(s)

aws_fsx_ontap_storage_virtual_machine

Terraform Configuration Files

I have an SVM setup using a self managed AD.

Whenever I push changes after the SVM has been created, terraform wants to replace the SVM as the case of the domain name has changed from lower to upper case.

Nothing from my SVM code has changed between pushes.

See example code below:

active_directory_configuration {

    self_managed_active_directory_configuration {
      dns_ips       = aws_directory_service_directory.my-AD.dns_ip_addresses
      domain_name   = aws_directory_service_directory.my-AD.name

The first time I run this code, the SVM is created successfully. On subsequent changes, I get the following output:

~ self_managed_active_directory_configuration {
              ~ domain_name                             = "MYDOMAN.COM" -> "mydomain.com" # forces replacement

The only way I have got past this issue is to use the upper() function around the domain_name reference.

Why is my domain changing case?
Why is this field case sensitive?

hashicorp / terraform-provider-aws