This article is intended for developers, partners and app publishers. It describes how to copy your app from Sandbox to Production, e.g. in case you tested a new version of your app on Sandbox and want to publish it on Production.
Open your app on Sandbox and go to the menu General. In the section App configuration you can download a json-file.
Open your app in Production and Upload your App configuration (.json).
Note
Make sure, all your URLs, etc. refer to the Production environment. You can either do the changes within the JSON or in the app configuration in Production.
Follow the link to read more about the requirements needed, to publish an app.