Google Apps Migration for Microsoft Exchange Administration Guide - Manual (Page 59)

Migration 59
Groups/Distribution Lists
• The e-mail migration tools do not migrate your organizations distribution lists / groups into
Google Apps.
• The e-mail migration tools do migrate e-mails sent to groups or distribution lists. You will
need to ensure these groups are provisioned into Google Apps before users start to use
Google Apps to ensure properly e-mail flow when users reply to messages sent to these
groups.
E-mail
• When a domain is configured for dual delivery at the email gateway, mail between users
within the same organization will not routed to external gateways and dual delivered. If
you are running in this configuration you may want to consider also migrating e-mail to
Google Apps for the period of time you have dual delivery enabled.
• If there are errors or problems with a user migration you may choose to remigrate all data
for that user. Doing so will not duplicate existing email content already in the mailbox.
Calendar
• If your organization is migrating from one domain name to another within Google Apps (for
example, from
mydomain.com
to
otherdomain.com
), be sure the proper e-mail aliasing is in
place to ensure the migrated data is properly reflected within Google Calendar.
Multiple Domain Aliases
• If your organization has multiple domains and/or multiple email aliases for user accounts,
these email addresses should be provisioned on the user account in Google Apps before
migrating Calendar data. If these aliases are not defined in Google Apps, Calendar event
data may not be properly reflected or migrated to Google Apps.
• Calendar event modifications not migrated for migrated events
• Calendar migration does not support migrating delta changes to existing events that have
already been migrated to Google Apps. For example if the details of a meeting are
updated after migrated to Google Apps even if you configure the migration tool to “Migrate
all data (overwriting previously migrated data)” these events are not be updated.
Because of this, consider carefully when best to migrate Calendar data. Calendar
migration does not support a date range for migration.
• The Calendar migration will pick up new meeting requests created since your last
migration, as with contacts and email.