Final answer:
Without specific information on the configured Connection behaviors in Copado, the exact outcome when deploying from Dev 1 to INT cannot be determined. Typically, outcomes range from automated back-deployments, requiring manual back-deployments, to no action for back-deployment.
Step-by-step explanation:
When a user story is deployed from Dev 1 to INT using Copado, the behavior that occurs will depend on the specific Connection behaviors configured in the Pipeline. Without explicit information on the Connection behaviors set within Copado, it's difficult to determine the exact outcome. However, typically in a Continuous Integration/Continuous Deployment (CI/CD) pipeline, such configurations can either trigger an automatic back-deployment, require a manual back-deployment, or perform no action for back-deployment at all. An automated back-deployment would imply that Copado is set up to automatically propagate changes backwards in the pipeline (from INT to Dev2, in this case). But if the Connection behaviors do not specify this, then one might need to manually trigger a back-deployment or it may not occur at all.