Update CHANGELOG.md for #35993

CHANGELOG.md

@@ -10,6 +10,7 @@ FEATURES:
 ENHANCEMENTS:
 
 * aws_kinesis_firehose_delivery_stream: Add `custom_time_zone` and `file_extension` arguments to the `extended_S3_configuration` configuration block ([#35969](https://github.com/hashicorp/terraform-provider-aws/issues/35969))
+* resource/aws_appflow_flow: Allow `task.source_fields` to be a `null` value ([#35993](https://github.com/hashicorp/terraform-provider-aws/issues/35993))
 * resource/aws_codepipeline: Add `trigger` configuration block ([#35475](https://github.com/hashicorp/terraform-provider-aws/issues/35475))
 * resource/aws_config_configuration_recorder: Add plan-time validation of `aws_config_organization_custom_rule.lambda_function_arn` ([#15136](https://github.com/hashicorp/terraform-provider-aws/issues/15136))
 * resource/aws_instance: Add configurable `read` timeout ([#35955](https://github.com/hashicorp/terraform-provider-aws/issues/35955))
@@ -22,6 +23,7 @@ Add attributes `admin_password_secret_kms_key_id` and `manage_admin_password` ([
 BUG FIXES:
 
 * data/aws_redshiftserverless_namespace: Properly set `iam_roles` attribute on read ([#35965](https://github.com/hashicorp/terraform-provider-aws/issues/35965))
+* resource/aws_appflow_flow: Fix perpetual diff when `task.task_type` is set to `Map_all` ([#35993](https://github.com/hashicorp/terraform-provider-aws/issues/35993))
 * resource/aws_config_configuration_recorder: Fix `panic: interface conversion: interface {} is nil, not map[string]interface {}` when `recording_group.exclusion_by_resource_types` is empty ([#15136](https://github.com/hashicorp/terraform-provider-aws/issues/15136))
 * resource/aws_config_rule: Change `name` to [ForceNew](https://developer.hashicorp.com/terraform/plugin/sdkv2/schemas/schema-behaviors#forcenew) ([#15136](https://github.com/hashicorp/terraform-provider-aws/issues/15136))
 * resource/aws_config_rule: Fix `InvalidParameterValueException: PolicyText is required when Owner is CUSTOM_POLICY` errors on resource Update ([#15136](https://github.com/hashicorp/terraform-provider-aws/issues/15136))