I am performing a migration where a single user may have a mailbox in more than one source O365 tenant. Apparently the mailbox content will be duplicated to some extent for these users. If i migrate from both source O365 mailboxes to a single target mailbox will the duplicate content be doubled up in the target mailbox?
If so, is there a way to remove the duplicates as a part of the migration? I.e, can it check against the messageID or a unique attribute to prevent duplication.
Please sign in to leave a comment.