Missing example data when importing openapi3 in postman v7.9.0 - swagger

Question

I'm importing a swagger openapi 3.0.0 file in Postman. I have some example data in swagger that I'd like to be synchronized in the postman collection.
Example of example data:
RestaurantPayload:
type: object
properties:
google_places_id:
type: number
format: integer
name:
type: string
city:
type: string
cover_image:
type: string
latitude:
type: number
format: double
longitude:
type: number
format: double
rating:
type: number
format: float
categories:
type: array
items:
type: string
example:
google_places_id: 561
name: "Very cool restaurant"
city: "Rome"
cover_image: "http://my-picture-url.jpg"
latitude: 39.485855
longitude: 49.48585747
rating: 4
categories: [
"sushi"]
I tried three different ways:
1- Importing the JSON/YAML as it's exported from swagger directly in Postman. It works and I get the collection with all the methods I'm looking for BUT I'm missing example data. For instance
2- Converting the openapi file to postman using the postman command line converter (https://github.com/postmanlabs/openapi-to-postman)
Same situation, example data is missing
3- Using an external service as APImatic (https://www.apimatic.io)
This is the only way I managed to get a Postman JSON which - once imported in the postman app - keeps all example data in place
I'd really like NOT to need an external service to perform this task and to be able instead to translate my openapi specifications to postman with all the example data with a command line tool or something similar.
Do you happen to know why is this happening and how I can get what I need?
Thank you
Marco
Edit: the APImatic solution doesn't seem to be viable because it breaks the endpoints.
APImatic:
YAML import from Swagger
So I'm stuck, one import method breaks the endpoints while the other breaks the examples :-/