Safeguard your org from security risks by migrating your packaged and distributed connected apps to packaged external client apps. Use the connected app migration tool to create a packaged external client app. Migrate connected apps that are packaged in first-generation or second-generation managed packages as well as those distributed to other internal orgs to packaged external client apps. Customer OAuth flows, tokens, and active sessions remain valid through package upgrade, so there's no need to reconfigure or reauthorize for the packaged external client app.
Where: This change applies to Lightning Experience in Group, Essentials, Professional, Enterprise, Performance, Unlimited, and Developer editions.
How: From the App Manager in Setup, open the connected app and click Migrate to External Client App. The automated process creates a packaged external client app.