You should not use the Production env copy for DEV. the production env copy is built to send track information to the production report suite.
If you want to test launch script on dev environment then you can get it by clicking on the install button of the development environment, and to get the script for other environments you need to follow the same steps.
In the Adobe analytics extensions, you will see options to configure report suites, for development configure only development related report suite, and for production configure prod related report suite.
Once, the configuration is completed, go to the "publishing flow" and create a library and add all changes, then build and publish.
For testing your library should be in the approved state, for the production it should be in the published state.
You can use different report suites for development and production, you can configure a development report suite for both dev and stage environments.