Our tenant had all of the default term groups (People, Search Directories, System) plus a few additional ones we created. Sometime in the last week, all except System disappeared. I can't figure out if this is an M365 backend issue, or if someone deleted them.
I'm trying to troubleshoot what happened. Does the Microsoft Purview Unified Audit Log capture events from the SharePoint Online services, such as Term Store? If so, which workload and activities should I select when entering search criteria?