The need to find SharePoint documents with sensitivity labels might arise during a tenant divestiture to decrypt the documents before the split. As it turns out, searches against the SharePoint InformationProtectionLabelId property is a good way to find the files. After that, the need arises to decrypt the documents, which is where Microsoft Purview eDiscovery (premium) might come in handy.
Sensitivity labels are a great way to protect confidential documents stored in SharePoint Online. Sometimes the documents must be decrypted. This article explains how to build a PowerShell script which uses Graph API calls to navigate to a folder in a SharePoint Online document library and decrypt the protected documents found in the folder.