I found a old post with link as follows: Editing Environmental variables while using Postman CLI - #4 by xk0der
The solution was to send a request to the postman api to perform an update of the environment variables between postman cli collection runs.
My question is where do you write the request? and if you have 10 collections to run via postman cli, if you want to persist the environment variables from each collection run, does that mean making the request call 10 times?