Importing TMF APIs Postman Collection

I'm trying to import TMF API postman collection in StopLight, this import creates the API methods but does not create the models.

Using swagger editor, I can convert the Swagger API code to YAML and can see the models getting created in it. I tried to copy the YAML code created by Swagger to StopLight editor, however the paste action does not work in StopLight.

Can you please guide me on how can I do this import so that methods and models are created.

Thank You,

Ashwajit