Exchange - Move mailbox nightmare!

[LizardKing]

Can any one help!
Were in the process of moving from Exchange 2003 to 2010, and at the moving mailbox stage, all this had gone well untill i came in this morning to two users that have lost all there emails from before the move, exchange sees there mailbox's as 0.5mb each so i know there not hiding in there.
Also another user is now missing all there contacts/calender and todo list but there emails are all present
As the copy went without any errors exchange has since removed the 2003 copy.
We have a backup of the datastore in its entirety but not a grt style backup.
Is there any way we can mount the datastore and recover items out of it?

 

[LizardKing]

Been a LONG time since i did it in 2003 but you can use recovery storage groups to mount a database. Then you can use exmerge to extract the mailbox you require to a PST and re-import it to the new database. Plenty of documentation about it.

Thanks - i'll look into that, I'm not usually an exchange admin so god knows how i've fallen into doing this.

 

[LizardKing]

Wish there was an easier way without 3rd party tools

In Exchange 2003 you can simply mount an RSG, then extract to PST using ExMerge from that.

It does seem strange why they would do away with exmerge, it was a fantastic tool!