Account Migration Organization Change

Frank Tragni 0 Reputation points

I currently have [Moderator note: Personally Identifiable Information removed] domain registered under the organization [Moderator note: Personally Identifiable Information removed] Insurance. I am not the admin of this 365 account. I have all of my emails and data and want to migrate all data into a different organization where I am the admin so that I have the ability to add employee emails, and manage my business as the admin going forward. I cannot lose all of my email and data existing under this account. Please advise how I can smoothly migrate into a new office account and keep same email domain with all relevant email info etc..

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4 answers

  1. Vincent Choy 10,965 Reputation points • Volunteer Moderator

    First let me clarify that I am a user just like you. I do not work for Microsoft.

    Your post is confusing. So I need to get some clarification.

    You said **"**I currently have [Moderator note: Personally Identifiable Information removed] registered under the organization ING Insurance. I am not the admin of this 365 account."

    It is true that ING Insurance, with the domain name @ing.com is hosted with Microsoft365,

    👁 User's image

    burlingtonai.com is not. It currently points to a private email service hosted on Amazon.com

    👁 User's image

    So the direct meaning of your post is a bit confusing as Burlingtonai.com does not point to a Microsoft365 account. And I am confused when you say it is registered with ING.com too.

    So correct me if my understanding is incorrect -

    You currently have an email with ING (maybe frankxx @ing.com?) with an associated M365 account.

    You wish to move the contents of the @ing.com account to an account in burlingtonai.com?

    1. If that is the case this is what I suggest you do

    First sign up a Microsoft365 business plan for burlingtonai

    1. Next, set it up as per required. Suggest getting a competent Microsoft365 partner for help.
    2. For emails, the easiest way, if you have MS-Office desktop, is to export the emails using a PST file.
      For files on One Drive, down load them on to your laptop

    The rest would be a lot more difficult / impossible. It would be easier if you engage a Microsoft365 partner to better explain this to you.

    Warm Regards

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  2. Darren-Ng 11,355 Reputation points • Microsoft External Staff • Moderator

    Dear @Frank Tragni,

    Thank you for posting your question in the Microsoft Q&A forum.

    Please understand that our forum is a public platform, and we will modify your question to cover your organization domain name in the description. Please notice to hide these personal or organization information next time you post error or some information to protect personal data.

    Based on your description, you want to move your email data and custom domain to a new Microsoft 365 organization where you are the admin, while keeping all existing data.

    In this scenario, the solution involves tenant-to-tenant migration + domain transfer, but there is an important limitation: You are not the admin of the current tenant, so you cannot perform the migration yourself. The process requires cooperation from the current tenant admin or Microsoft Support.

    Besides that, you would like to know how to contact the Microsoft Support team for further guidance on the migration process. Below are the steps to submit a support ticket (please note that only a Global Administrator can create a support request). You can use new tenant where you are admin to submit ticket via https://admin.microsoft.com/#/support/requests 

    You can raise support ticket in the Microsoft 365 Admin Center > Support > Help & Support.

    Or you can use this link to find the appropriate contact number: Global Customer Service phone numbers - Microsoft Support 

    In the meantime, here are some articles you can refer to know further about the migration progress:

    Cross-Tenant Migration (FastTrack method)

    Microsoft 365 tenant-to-tenant migrations

    I hope my information above meet your expectations, please feel free to reach out if you have any other questions.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  3. Frank Tragni 0 Reputation points

    Can i please get microsoft customer service tech support assistane to ensure this migration is done properly and a smooth transition? ING admin will cooperate with transition

    1. Frank Tragni 0 Reputation points

      how do i speak with an agent to assist?

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  4. AI answer

    A smooth migration with the same email domain and all data requires two things:

    1. moving the data, and 2) moving the custom domain from the old tenant to the new one. Because there is no admin access to the current tenant, the process cannot be completed self‑service; the current tenant’s admin must cooperate or Microsoft Support must be involved. Below is the standard, supported path so the target admin (you) can plan it and know what to request.

    1. Plan the target (new) Microsoft 365 organization

    1. Purchase and set up the new Microsoft 365 business subscription where admin rights are available.
    2. In the new tenant, prepare to use the same custom domain (burlingtonai.com) but do not add it yet; it must first be removed from the old tenant.
    3. Create a temporary onmicrosoft.com mailbox for the primary user (for example, ******@newtenant.onmicrosoft.com) so data can be imported later.

    2. Get the domain released from the current tenant

    A custom domain can only be attached to one Microsoft 365 tenant at a time. To move it, it must be removed from the old tenant:

    1. The current ING Insurance tenant admin must remove the custom domain from that tenant. This follows the documented pattern for moving a domain between subscriptions:
      • Remove or change all user, group, and mailbox addresses that use @burlingtonai.com so the domain can be removed.
      • Remove the custom domain from the tenant. When Microsoft 365 is hosting DNS, this also removes MX, CNAME, and other DNS records and causes services (email, Teams, etc.) on that tenant to stop for that domain.
    2. Once removed, the domain becomes available to be added to the new tenant.

    The manual transfer guidance describes the impact clearly: when the domain is removed from the old subscription, Microsoft 365 services for that domain stop working there until the domain is added and configured in the new subscription.

    “Your Microsoft 365 services such as email, Teams, and your public website stop working during this step… Services resume after you complete the following steps: Add your custom domain to your new subscription… set up your users for email.”

    3. Add the domain to the new tenant and restore mail flow

    After the old tenant has released the domain:

    1. In the new tenant’s Microsoft 365 admin center, add the custom domain and verify ownership.
    2. Add or modify DNS records as required for Exchange Online in the new tenant:
      • If Microsoft 365 will host DNS, create the required DNS records.
      • If DNS is hosted elsewhere, update MX, CNAME, and other records to point to the new tenant.
    3. Create user accounts on the custom domain (for example, ******@burlingtonai.com, plus any employee mailboxes needed).

    This aligns with the documented steps:

    • “Add your custom domain to your new subscription.”
    • “Add or modify DNS records… Create your users on your custom domain.”

    Once DNS is updated and propagated, new email will start flowing to the mailboxes in the new tenant.

    4. Move mailbox data from the old tenant to the new tenant

    Because the source tenant is a different organization and there is no admin access, there are two realistic data‑migration patterns:

    Option A – User‑driven export/import via Outlook (no admin rights needed)

    This is the most practical when only a small number of mailboxes must be moved and the user can still sign in to the old mailbox:

    1. On a client machine with Outlook connected to the old mailbox:
      • Use File > Open & Export > Import/Export.
      • Choose Export to a file and export all email, calendar, and contacts to a .pst file.
    2. In Outlook connected to the new mailbox in the new tenant:
      • Use File > Open & Export > Import/Export again.
      • Choose Import from another program or file and import the .pst into the new mailbox.

    This is the same method described for importing previous email, calendar, and contacts into a new Microsoft 365 account.

    Option B – Admin‑driven cross‑tenant migration (requires admin on both tenants)

    If the ING Insurance admin is willing to help, a more controlled migration can be done using:

    • Exchange admin center mailbox migration features, or
    • A third‑party migration tool.

    The documented cross‑tenant migration scenario with a third‑party tool recommends:

    • For ≤500 users: migrate mail, calendar, and contacts into the target tenant mailboxes (optionally limiting mail by date range).
    • For >500 users: use a multi‑pass approach (first contacts, calendars, and recent mail; then older mail in subsequent passes).

    This requires:

    1. Mailboxes created in the target tenant with the same addresses.
    2. The migration tool configured with source and target admin credentials.
    3. Running the migration passes and monitoring progress.

    5. Manual transfer process considerations

    The manual transfer guidance for moving data between Microsoft 365 accounts emphasizes:

    • Expect downtime for services on the old tenant once the domain is removed.
    • Use two browser sessions to sign into both old and new subscriptions when manually transferring data.
    • After the domain is added to the new tenant and DNS is updated, set up users and then transfer data (via Outlook export/import or migration tools).

    6. What must be coordinated

    To keep the same email domain and all data:

    1. Coordinate with the ING Insurance tenant admin to:
      • Keep the old mailbox active long enough to export or migrate all data.
      • Remove the custom domain from that tenant when ready.
    2. In the new tenant (where admin rights exist):
      • Add the custom domain and configure DNS.
      • Create mailboxes for self and employees.
      • Import data from .pst files or via a migration tool.

    Without cooperation from the current tenant admin, the domain cannot be moved and admin control over that domain’s mailboxes in Microsoft 365 cannot be obtained. In that case, the only self‑service action available is exporting personal mailbox data (via Outlook) and using a different domain in the new tenant.

    References:

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