Integrations before and after Private Publishing

 We need to share an API with an external group of people and I know that I need to configure these users as Consumers since they will just be looking at the  API contents and trying out the GET method. My dilemma is that we need to generate a Production AWS gateway from the Development one  (Development environment can be volatile plus the data retrieved won't be live).

Q) Can we keep the same integration but simply change the Dev Swagger Hub User environment access and secret keys to those of the Production Swagger Hub User to generate a Production API Gateway?

Q) What happens to the integration and  api key in Authorize once an API has been published? (Is the API key securely locked and does the integration disappear?)) 

Thanks

 Thanks