Data deduplication for Exchange online export PST

Recently encountered 1 user feedback about exporting PST through Office 365 Exchange online, the following link is an article I wrote earlier about how to export PST in Office 365 Exchange Online:

http://liujb.blog.51cto.com/269257/1784934

The following are information about the problem:

Problem Description:

Exchange online in-place ediscovery search results exported to PST file when exported to 1 PST, not exported by user name separately PST

Processing process:

Customers before exporting PST is normal, according to the user's name separately exported PST, that this problem should not be on Exchange online, should be out of action. By communicating with the customer, the user, when exporting the PST, ticked off the option to enable deduplication to exclude duplicate messages. PST file will only include a single instance of the message. If you enable data deduplication, all search results will be exported to a PST file. If data deduplication is not enabled, a separate PST file is exported for each mailbox included in the search

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For the above description, we re-export the results of the search for PST, not checked: After enabling deduplication, PST files are exported by users, normal.

Data deduplication for Exchange online export PST