Update CHANGELOG.md for #37394

CHANGELOG.md

@@ -22,9 +22,12 @@ BUG FIXES:
 * data-source/aws_resourceexplorer2_search: Fix 401 unauthorized error due to missing `view_arn` in the AWS API request ([#36778](https://github.com/hashicorp/terraform-provider-aws/issues/36778))
 * data-source/aws_resourceexplorer2_search: Fix panic caused by bad mappping between Terraform and AWS schemas ([#36778](https://github.com/hashicorp/terraform-provider-aws/issues/36778))
 * data-source/aws_resourceexplorer2_search: Fix state persistence and data types ([#36778](https://github.com/hashicorp/terraform-provider-aws/issues/36778))
+* resource/aws_elasticsearch_domain: Fix handling of unset `auto_tune_options.rollback_on_disable` argument ([#37394](https://github.com/hashicorp/terraform-provider-aws/issues/37394))
 * resource/aws_fsx_ontap_storage_virtual_machine: Correctly set `tags` and `tags_all` on resource Read ([#37353](https://github.com/hashicorp/terraform-provider-aws/issues/37353))
 * resource/aws_fsx_openzfs_file_system: Correctly set `tags` and `tags_all` on resource Read ([#37353](https://github.com/hashicorp/terraform-provider-aws/issues/37353))
 * resource/aws_kms_custom_key_store: Change `trust_anchor_certificate` to [ForceNew](https://developer.hashicorp.com/terraform/plugin/sdkv2/schemas/schema-behaviors#forcenew) ([#37092](https://github.com/hashicorp/terraform-provider-aws/issues/37092))
+* resource/aws_opensearch_domain: Fix handling of unset `auto_tune_options.rollback_on_disable` argument ([#37394](https://github.com/hashicorp/terraform-provider-aws/issues/37394))
+* resource/aws_opensearch_domain: Wait for `auto_tune_options` to be applied during creation ([#37394](https://github.com/hashicorp/terraform-provider-aws/issues/37394))
 * resource/aws_securitylake_aws_log_source: Correctly handles unspecified `source_version` ([#36268](https://github.com/hashicorp/terraform-provider-aws/issues/36268))
 * resource/aws_securitylake_aws_log_source: Prevents errors when creating multiple log sources concurrently ([#36268](https://github.com/hashicorp/terraform-provider-aws/issues/36268))
 * resource/aws_securitylake_custom_log_source: Prevents errors when creating multiple log sources concurrently ([#36268](https://github.com/hashicorp/terraform-provider-aws/issues/36268))