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As of Registry v1.1.0, the CO and COU Members Groups are only populated with CO People in Active or Grace Period status (or for COU Members Groups, a corresponding CO Person Role in Active or Grace Period status). Prior to v1.1.0 the behavior was unspecified. No explicit action is required unless you were relying on the prior behavior for integration purposes.
Registry will automatically update (reconcile) the Members groups as part of the upgrade process.