saveAll use the lowest common denominator for determining the entity type to be saved.

[LGDOI]

Given a list of entities with mixed types which have common parent.

e.g.,
Base class does NOT have @Node annotation

public abstract class BaseEntity {}

Entity classes have @Node annotation

public abstract class Animal extends BaseEntity {}
public abstract class Pet extends Animal {
  public static  class Cat extends Pet {}
  public static  class Dog extends Pet {}
}

Repository class

public interface AnimalRepository extends Neo4jRepository<Animal, String> {}

List of animals

List<Animal> animals = List.of(new Cat(), new Dog());

Save iteratively

animals.forEach(animalRepository::save);

Two nodes created with all labels (Animal, Pet, Cat, Dog) correctly as expected

Save the list with saveAll does not save correctly.

animalRepository.saveAll(animals);

Two nodes are created but these nodes only have a label of BaseEntity.

Expected behavior

The saveAll() method with mixed entity type should create exact same labels as save().

version 6.1.1

[michael-simons]

I assume you mean @Node annotation, right? There is no @Entity annotation.

[michael-simons]

Anyway, I can confirm this,

[michael-simons]

Thanks for reporting this. This is fixed and will be released this week.

[LGDOI]

You are right about the annotation. I updated the original post from @Entity to @Node for a record.
Thank you for quick resolution.