Delete case milestones in bulk through Data Loader or programmatically via Apex to reclaim data storage consumed by outdated milestone records. Previously, milestone records accumulated indefinitely on cases, with no supported way to delete them. This resulted in higher storage costs for high-volume organizations. Now, you can delete outdated milestones, such as when a case is reclassified and earlier milestones become irrelevant.
Where: This change applies to Lightning Experience and Salesforce Classic in Professional, Enterprise, Performance, Unlimited, and Developer editions.
How: From Setup, go to Entitlement Settings. Select Allow admins to delete case milestones checkbox and save. Admins can then delete milestones directly with Data Loader or Apex.