How to import cases exported from a different region running the same exact system?

If we are running two of the same systems (i.e. same configurations, same forms etc) and we decide to move some cases for whatever reason from system A to B, we know we can export the data into a CSV, JSON or other formats, but how do we then go about importing the data into the target system B.
Is there a mechanism in the web app or would one of our developers or admins have to migrate the data manually into the db?

Hello, if you are using v2, there is no way to do this through the UI. The only way would be through the API. Which country programme is this for?