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Hi,@FarazI995
Thanks for posting your question in the Microsoft Q&A forum.
According to your description, you are doing an IMAP migration. You seem to be missing the official documentation to guide you.
For what you need to know about migrating IMAP mailboxes to Microsoft 365 or Office 365, you can refer to this link:https://learn.microsoft.com/en-us/exchange/mailbox-migration/migrating-imap-mailboxes/migrating-imap-mailboxes?source=recommendations
Regarding your question “Is it possible to migrate all contacts?” according to the official documentation, IMAP migration does not migrate contacts, calendar items or tasks.
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