Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Dear SDA365
Thanks for raising your concerns in Microsoft Community.
We understand that you are having problems transferring your Amazon subscription to Microsoft and retaining your Outlook data.
I would like to confirm whether you are using a personal account or a business account.
Normally, you need to back up the data in Outlook, and after subscribing to Microsoft 365 Personal, you can reconfigure your mailbox in the Outlook app.
Unfortunately, since your question involves transferring Microsoft 365 subscriptions and involves domains, this question is more suitable for posting in Microsoft Learn (English only) because more users post these questions there. You can click "Ask a question" where experts can provide more professional solutions.
Here is a forum link where you can propose specific solutions, share your ideas, and help solve the problem.
We hope that your problem will be properly handled after contacting the correct department. Thank you for your understanding.
Best Regards,
Tracy - MSFT | Microsoft Community Support Specialist