Will editing a Vercel production variable update every older deployment?
No. Vercel applies environment-variable changes to new deployments. Create the intended deployment and verify it is serving traffic before assuming the updated value is active.
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More FAQs in Why is redeployment necessary after changing production environment variables?
Yes, if the wrong deployment or branch is selected. Confirm both the intended code revision and environment before creating the release that applies the configuration.
An older deployment may retain earlier configuration that no longer works or should no longer be used. Review configuration compatibility before directing users back to it.
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