@Ric Turner - Thanks for the question and using MS Q&A platform.
To show the actual number of messages in the export with deduplication enabled, you can follow these steps:
- Open the exported PST file in Microsoft Outlook.
- In Outlook, go to the "File" tab and select "Info".
- Click on "Properties" and then "Statistics".
- In the "Statistics" window, you will see the number of items in the PST file, which should be the actual number of messages in the export with deduplication enabled.
Alternatively, you can also use the "Export Report" feature in Microsoft 365 Compliance Center to get a report that shows the number of items exported with and without deduplication. To do this, follow these steps:
- Go to the Microsoft 365 Compliance Center and navigate to "Content search".
- Find the search that you exported and click on it to open the search details.
- Click on the "Export report" button.
- In the "Export report" window, you will see the number of items exported with and without deduplication.
I hope this helps! Let me know if you have any further questions.