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Does New-MailboxRestoreRequest create duplicate mail items if ran more than once

This one should be really simple to anyone that knows. We had a failure on our exchange (no failover cluster). I had to move it to another box (a vm now thank god). So I brought the users back online in a blank db, and proceeded to mount and restore the old stuff back. However we are still missing the emails from backup to crash. I've since been able to recover the data from the crash time.

Question is now if I run another restore request from the newer data, will it create duplicates. I would think not, but just wanted to be sure. I could always filter with a date time stamp, but would rather just run it full since time is not of the essence and I'd rather get it all back.
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bhieb
Asked:
bhieb
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VirastaRCommented:
Hi,

I hope this clarifies the question you have.

Restoring a Mailbox from an Exchange Server 2013 Recovery Database

Hope that helps :)
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bhiebAuthor Commented:
Not really, those are the steps for restoring, which I've done. My questions is if I run another full restore from a different recovery DB with more data, will it duplicate items?

Example.

I restored Bob's email from beginning of time to 8/23. Now I've recovered the missing data gap between 8/23 and 8/24. So if I mount it as a recoveryDB and do another restore will Bob see duplicates since it contains not only data from 8/23-8/24 but all Bob's old stuff from beginning of time which was previously restored. I don't want Bob to see 2 of every message pre 8/23.
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bhiebAuthor Commented:
FYI it doesn't duplicate. I ran it twice on a test mailbox no dupes.
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bhiebAuthor Commented:
No better answer
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