How do embeded documents without id?

[bm13kk]

i've spend a week already to find some solution for this.

i have next mongo models:

class Inner(EmbeddedDocument):
    meta = {
        'strict': False,
    }
    foo = fields.StringField()
    bar = fields.StringField()


class Outer(Document):
    meta = {
        "collection": "outer",
        "auto_create_index": False,
        'strict': False,
    }

    fizz = fields.StringField(unique=True)
    inner = fields.EmbeddedDocumentField(Inner, default=None)

Graphene nodes:

class InnerGraph(MongoengineObjectType):
    class Meta:
        model = Inner
        interfaces = (relay.Node,)


class OuterGraph(MongoengineObjectType):
    class Meta:
        model = Outer
        interfaces = (relay.Node,)

And graphene query

class Query(ObjectType):
    patient_list = MongoengineConnectionField(OuterGraph)
    
    # some resolver - removing it change nothing

Outer entity working fine, as expected, no problems.

But inner entity has id field (which is not exists in first place)
And no other fields fixed.

Output in docs. Query -> Outer (edges, node) -> inner (type: InnerGraph)

InnerGraph
Fields
 id   ID!
The ID of the object.
Implements
 Node
An object with an ID (edited) 

Any ideas, how to make this combination work?