I’ve been posting a bit about the new Export/Import API in the Microsoft Graph recently but I received an eMail today about exporting calendar appointments to a CSV using a script that I wrote some time ago and published on the PowerShell gallery https://www.powershellgallery.com/packages/MSGraph-ExportCalendar/1.3.1.0/Content/functions%5CExport-GCECalendarToCSV.ps1