Rollback on deleted record from HasMany? (record not restored)

Ember Data
1

Trying to rollback after a deleted record seems to not restore the record to the hasMany relationship. I can see the record still exists in the canonicalState array but the currentState is always missing the record. How can i restore the record?

I have a model with a has many relationship

App.User = DS.Model.extend({
   posts: DS.hasMany('post'),
});


App.Post = DS.model.extend({
  body: DS.attr('string'),
  user: DS.belongsTo('user')
});

I delete a post from the users model

user.get('posts').then(function(posts){
   posts.objectAt(2).deleteRecord();
});

Then i roll it back after the user cancels the change.

user.rollback();
user.get('posts').then(function(posts){
     posts.forEach(function(post){
          post.rollback();
     });
});

The posts array still has this state.

__ember1438618269274: null
__ember_meta__: Object
__nextSuper: undefined
canonicalState: Array[4]
currentState: Array[3]
isLoaded: true
isPolymorphic: undefined
length: 3
record: Class
relationship: ember$data$lib$system$relationships$state$has$many$$ManyRelationship
store: Class
type: my-app@model:post:
__proto__: Class
2

model.rollbackAttributes(); is the new method. I hope it solves this,