Thank you for trying out our starter kit! Depending on what you actually want to do, you can do a number of things. Most likely, you can just keep running your current set-up, and remove the n8n and postgres services from your docker-compose file. This means that you don’t have to migrate at all, just that you add some services.
If you want to migrate fully to the new starter-kit set-up, you can also export all workflows and credentials with n8n commands, and import them in the n8n container (you can add them to the n8n/backup folder of the starter-kit).