In the eDiscovery portal of the Security & Compliance Center, we create several Searches in a single case, when we select all search tasks to bulk export to one PST file, we will notice a checkbox to let us enable or disable de-duplication. However, for bulk export, de-duplication is enabled by default per product design, the checkbox does not make any difference. Can we gray out/disable the checkbox for bulk export to avoid confusion?

Design:
• When you export the results of multiple searches, the search queries from all the searches are combined by using OR operators, and then the combined search is started. The estimated results of the combined search are displayed in the details pane of the selected export job. The search results are then transferred to the Azure storage area in the Microsoft cloud. The status of the transfer is also displayed in the details pane. As previously stated, after all the search results have been transferred, you can download them to your local computer.
• If the same email item or document from the same content location is returned by more than one of the searches that you export, only one copy of the item will be exported.
https://support.office.com/en-us/article/Manage-eDiscovery-cases-in-the-Office-365-Security-Compliance-Center-edea80d6-20a7-40fb-b8c4-5e8c8395f6da?ui=en-US&rs=en-US&ad=US#step5