eDiscovery -Mailboxes from Migrated Tenant

Jacob Ellis 66 Reputation points
2022-11-03T23:23:34.547+00:00

Trying to run an eDiscovery search on mailboxes for migrated users from another tenant, however, using the time range in eDiscovery, it will not provide email for dates when email was actually received only from when the mailbox was migrated.

So if search is 2019/1/1 - 2020/1/1 there will not be any results

Is there a way to force the search to look at the original timestamp of emails on a migrated mailbox?

Microsoft Purview
Microsoft Purview
A Microsoft data governance service that helps manage and govern on-premises, multicloud, and software-as-a-service data. Previously known as Azure Purview.
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Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Jacob Ellis 66 Reputation points
    2022-11-07T13:56:42.483+00:00

    @KyleXu-MSFT

    New information:

    Email was migrated from old tenant to new tenant. User account that I am trying to search was deleted before migration -at the time subject to 18 month retention.

    Because new UPN and old alias does not exist in new tenant I am having to search for “participants” during a specific date range. While I am getting some data it does not seem to be consistent.