Duplicate of BUG-000157134: User information is stored in the ArcGIS Monitor configuration store. Refer to the following link for more information: https://doc.arcgis.com/en/monitor/latest/administration/windows/back-up-and-restore-your-deployment.htm#GUID-F2748BF2-E97C-43A4-AAEF-1679F1DF5561.