Calendar Migration Guide

4 min read Updated on December 1, 2024 Cloudiway Team

Overview

Cloudiway provides comprehensive calendar migration capabilities across multiple platforms including Office 365, Google Workspace, and Zimbra. The migration process maintains organizational relationships while respecting platform-specific limitations.

Supported Platforms

Microsoft 365
  • Exchange Online
  • Outlook calendars
  • Room resources
Google Workspace
  • Google Calendar
  • Secondary calendars
  • Resources
Others
  • Zimbra
  • IBM/HCL Notes
  • GroupWise

Key Features

The calendar migration includes several important capabilities:

Delta Synchronization

Incremental updates during multiple migration passes ensure newly added appointments are captured.

Appointment Links Preserved

Organizational relationships are maintained so cancellations properly propagate to all attendees.

Resource Management

Rooms and equipment appointments are migrated with proper resource associations.

Access Control Transfer

Calendar permissions and delegation settings are preserved during migration.

Comprehensive Scope

Both primary and secondary calendars are included in the migration scope.

Email Address Conversion

The platform offers a powerful "Convert Email Addresses" setting that automatically rewrites email addresses in:

  • Permissions and sharing settings
  • Organizer fields
  • Recipient/attendee lists

This conversion uses the migration roster as a reference table, mapping source addresses to target addresses.

Critical for Meeting Editing

Email address conversion significantly impacts whether users retain editing capabilities after migration. In Exchange, only the meeting organizer can modify appointments. If the organizer's address isn't correctly converted, users may lose the ability to edit their own meetings.

Timezone Configuration

Proper timezone configuration is essential for accurate calendar migration.

Before Migration

Ensure mailbox timezones are correctly configured on the target platform before migration. Incorrect timezone settings can cause calendar entries to appear at wrong times, potentially affecting all-day events and recurring meetings.

Platform-Specific Notes

Google Workspace Migrations

  • Secondary calendars transfer with their multiple owners preserved
  • The system designates one owner as primary and migrates to that mailbox
  • Other owners maintain access through sharing permissions
  • Important: Calendar migration does not propagate changes or deletions to appointments after migration

Zimbra Migrations

Secondary calendars are excluded from Zimbra migrations. Only primary calendars are migrated.

Known Limitations

Be aware of these calendar migration limitations:

No Post-Migration Sync

Changes and deletions made on the source after migration do not automatically sync to target appointments.

No Attachment Transfer

Calendar entry attachments do not transfer during migration. Users should save important attachments before migration.

Best Practice

Schedule your final calendar migration pass (delta sync) as close to cutover as possible to minimize the number of new appointments that might be missed.

Ready to Migrate?

Configure your source and target connectors, enable calendar migration in your project settings, and run a pilot migration to verify the results before proceeding with your full migration.

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