Self Hosting Primero v2 - issue with primero application container

Now that we have managed to install the production environment, what are the next steps to migrate the data to self hosted environment?

#1 how do we export and import all the data from the current production into the new environment
#2 how do we link the demo instance with the production instance so that we can deploy new configurations
#3 do you have any other documentation about migration besides this one Self Hosting Primero v2 - Installation