eDiscovery -Mailboxes from Migrated Tenant

Jacob Ellis 66

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?

KyleXu-MSFT 26,261 Reputation points

2022-11-04T05:37:37.24+00:00

@JacobEllis-2694

To narrow down this one, I want to confirm with you that how do you migrate those mailboxes and which filter that you used to create this eDiscovery search?
Jacob Ellis 66 Reputation points

2022-11-04T09:14:12.61+00:00

@KyleXu-MSFT I will have to get back to you on the exact method but the eDiscovery filter is in Core/ Standard where email was received between “x” and “y”.

Running this query, nothing is returned for the mailbox for dates older than the date the mailboxes were migrated over.
KyleXu-MSFT 26,261 Reputation points

2022-11-07T07:16:14.737+00:00

@Jacob Ellis

How be this mailbox migrated? I will try to check it in my lab.

Did you try to check from Outlook client? Whether the receive between filter could find those emails?

1 answer

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.
Please sign in to rate this answer.
KyleXu-MSFT 26,261 Reputation points

2022-11-09T06:24:07.86+00:00

How are these mailboxes migrated? Migrated through PST or other tools? I try to move an email from mailbox A to mailbox B, this email could be search by "received between" filter successfully.
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.

Share via

eDiscovery -Mailboxes from Migrated Tenant

1 answer

Your answer