Calendar synchronization for some switched users may be seen to continue to run from source to target. This may be observed in the Agent log with the following entries:
CCalKernel::Synchronize Informational 6233 One way synchronization. The Mailbox '<mailbox name>' is 'Switched' and 'Not completed'.
CCalKernel::ProcessMailbox Informational 3603 Synchronizing calendars from '<source>' to '<target>'.
Allow time for the Mail and Calendar Agents to synchronize all items and troubleshoot any errors if neccessary. The Mail Source Agent will then mark the switched mailbox as "complete", and log:
MailKernel::IsReadyToComplete Informational 2088 Synchronization status: Item '/o=org/ou=First Administrative Group/cn=Recipients/cn=user' is ready to be completed.
CFolder::SetMMState TraceMsg 4109 Item '/o=org/ou=First Administrative Group/cn=Recipients/cn=user' is marked as "Complete". (Folder: '', SourceKey: '<folder_source_key>')