If you create a new MigrationBatch in EAC and a mailbox in that batch was already present in another previously created batch, the new batch will continue but will not show the duplicate mailbox as failed/error, it just dissappears. If you look via EMS Get-Migrationbatch -Identity (name)|fl you can see validation errors, for instance the specific failed mailbox and why it failed. This would've saved me A LOT of time if ...more »
Realtime status and statistic reporting on Mailbox moves and PST import/export preferably in EAC.
Currently there is a very basic EAC alert and Mail report possible with PST im/ex, but it only reports completion or fails. You then have to use several cmdlets in the shell in order to find out what the cause was.
Basically more like the Staged/Cutover migration information in the Recipients>Migration pane in EAC.