How do I prevent source mailbox attributes from overwriting existing target account/mailbox attribut (NETIQKB15833)

goal
How do I prevent source mailbox attributes from overwriting existing target account/mailbox attributes?

fact
Exchange Migrator 2.2 SP1

fact
Exchange Migrator 2.3

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Install Exchange Migrator version 2.2 with Service Pack 1.  A new option has been included in the 'Specify Migration Options' wizard to accomplish this.

Excerpt from EM 2.2 SP1 release notes:

• Exchange Migrator allows you to specify if you want to retain non-blank target mailbox properties when you merge source and target mailboxes. Retaining target mailbox properties does not apply to email addresses. Exchange Migrator always overwrites target mailbox email addresses with source mailbox email addresses when you merge source and target mailboxes. Specify to retain non-blank mailbox properties when you specify your migration options. For more information, see the product Help.

note
Please note that this information can also be obtained from the Exchange Migrator 2.2 Service Pack 1 release notes.

note
This option is only available for Inter-Org migrations scenarios.

Formerly known as NETIQKB15833