Exchange Migrator 1.x
Exchange Migrator 2.x
Error: 'This operation is not available for Intra-Site migrations'.
Exchange Migrator will not allow me to Undo migrations in an Exchange 5.5 to Exchange 2000/2003 Intra-Site (within the same site) migration scenario.
Exchange Migrator cannot perform the 'Undo' in an Intra-Site migration scenario. This is primarily because the mailbox is actually moved (not copied) from one server to another. In all other supported scenarios (Inter-Site and Inter-Org), the mailbox is copied and therefore the Undo is possible.
To undo a migration in this Intra-Site scenario, the mailbox needs to be manually moved from the target server back to the source server using a tool such as Move Mailbox.
A listing of scenarios supported by Exchange Migrator is included in the following article.
For information about Move Mailbox please reference the appropriate Microsoft documentation.