Why are some calendar events migrated to the primary Google calendar and not the original calendar? BitTitan Triage March 07, 2018 20:53 Updated Follow Why are some calendar events migrated to the primary Google calendar and not the original calendar? Answer:On the Google calendar, if the calendar event is not organized by the mailbox owner, that event can only be created on the primary calendar. Related articles What are exceptions to recurring calendar meetings, and are they migrated? Introduction: Migrating Calendars What is the difference between Google calendar reminders and Google calendar notifications? Are they migrated? How do I migrate calendars from Google to Office 365 with color? Why are my calendar events migrated into the primary calendar instead of a secondary calendar? Comments 0 comments Please sign in to leave a comment.