After you install the latest Data Mask managed package, it’s easier to set up, start, and monitor a Data Mask job and understand the state of your sandbox’s personally identifiable information (PII). The new interface changes are now shipped with the managed package and are automatically updated whenever the managed package is upgraded
Where: This change applies to Lightning Experience and Salesforce Classic (not available in all orgs) in Enterprise, Unlimited, and Developer editions where Data Mask is installed.