Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

I create stack a which exports an output which is used by stack b. Stack b uses the output as expected on deployment but when calling aws cloudformation list-imports, the result is an empty list.

Expected Behavior

I expected to see the export, created by stack a, to have stack b included in the result set of aws cloudformation list-imports.

How are you starting LocalStack?

With a docker-compose file

Steps To Reproduce

How are you starting localstack (e.g., bin/localstack command, arguments, or docker-compose.yml)

docker compose up

Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

t1:

AWSTemplateFormatVersion: '2010-09-09'
Resources:
  MyS3Bucket:
    Type: AWS::S3::Bucket

Outputs:
  BucketNameExport:
    Description: Name of the S3 bucket
    Value: !Ref MyS3Bucket
    Export:
      Name: MyS3BucketName

t2.yml

AWSTemplateFormatVersion: '2010-09-09'
Resources:
  MyS3Bucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: !Sub
        - "${Prefix}-${ImportedName}"
        - Prefix: my-prefix
          ImportedName: !ImportValue MyS3BucketName

Deploy the templates

aws --endpoint-url=http://localhost:4566 cloudformation deploy --template-file localstack/t1.yml --stack-name my-s3-stack --capabilities CAPABILITY_NAMED_IAM
aws --endpoint-url=http://localhost:4566 cloudformation deploy --template-file localstack/t2.yml --stack-name my-s3-stack-2 --capabilities CAPABILITY_NAMED_IAM

Check if bucket name is as expected (it is)
aws --endpoint-url=http://localhost:4566 s3 ls

Check if export is being imported using list imports (it doesn't show up)
aws --endpoint-url=http://localhost:4566 cloudformation list-imports --export-name MyS3BucketName

Environment

- OS: Linux Mint
- LocalStack: Community
  LocalStack version: 4.1.2.dev1
  LocalStack Docker image sha: sha256:ce66d2f0fae065e79f7ce079b71416e6167e30087a51d02d3b976da4d77de3ab
  LocalStack build date: 2025-02-05
  LocalStack build git hash: 7f32b7df3

Anything else?

Here it seems like list imports is supported. I tried using both the CLI and boto3, both had an empty result set.