Export mailbox to pst extracts only empty folders

Hi Team,

I am trying to export a mailbox to pst file in certain range, the commands runs successfully but only extracts the folder structure  without any mails, i am running the below command, am i doing anything wrong in the below script?

New-MailboxExportRequest -Mailbox jgeorge -ContentFilter {(Received -gt "08/01/2017") -and (
Received -lt "08/01/2018")} -FilePath "\\filesrv01\pst\jgeorge.pst"

 Regards

ITGeek

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TechGUy,System Administrator.