Migration from O365 tenant for Exchange Online

Hello

I have an O365 account with 80 mailboxes that I need to migrate from tenant1 to tenant2
Only Exchange Online is beeing used, no SharePoint, no Office online

Microsoft domain in tenant1 is tenant1.onmicrosoft.com
company domain is acme.com
Mail accounts are xyz@acme.com

Microsoft domain in tenant2 is tenant2.onmicrosoft.com
company domain will be acme.com
Mail accounts will be xyz@acme.com

I have to migrate acme.com (and all email addresses xyz@acme.com) from MS tenant1 to MS tenant2
80 emails addresses xyz@acme.com are in use and "down time" has to be minimum

I noticed that I cannot even register acme.com in MS tenant2 without deleting acme.com from MS tenant1.
When I change DNS in acme.com for tenant2 it tells me that acme.com is already registered in tenant1...and that I need to "delete" acme.com from tenant1....

I only use Exchange Online (80 mailboxes). No SharePoint, No office online applications

What is the good procedure to migrate from tenant1 to tenant2 ?
How do I delete acme.com from tenant1 since all mailboxes are configured with acme.com? Manually? non automatic procedure?

THank you
gadsadAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

David Johnson, CD, MVPOwnerCommented:
why didn't you just add that subscription to your existing subscription? You can have multiple subscriptions.
0
gadsadAuthor Commented:
unfortunately is it not possible for commercial reasons
Tenant1 is payed to ISP1 and tenant2 is payer to ISP2 (that is how things are in France)
I have to find a technical answer to this problem
0
Vasil Michev (MVP)Commented:
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
gadsadAuthor Commented:
thank you
THe process was very complicated but migration is now over
Microsoft does not have a migration path from tenant 1 to tenant 2
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Exchange

From novice to tech pro — start learning today.