Do one-off dynos shut down when deploying a new release?

Issue

You are deploying a new release of your application with a schema change and are concerned about one-off dynos already running using the previous schema version.

Resolution

One-off dynos, those created by heroku run, executed by Heroku Scheduler or other means of starting "extra" dynos, are not killed when a new release is made; Only formation dynos, web, worker, etc., those specified in your Procfile and are able to be scaled, are restarted after a release finishes.

Please view the following URL for additional information on dyno types.: https://devcenter.heroku.com/articles/dynos#dyno-configurations

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