Battle of two Azure Active Directory Tenants :: How do I merge?

1) I have an Azure Active Directory tenant that has two Microsoft Azure subscriptions associated with it: 1) Microsoft Partner Azure subscription, 2) MSDN Ultimate Azure subscription.

2) Separately, I have a Microsoft Azure Active Directory tenant that is associated with my MSDN Ultimate Office 365 Developer subscription.

3) I have a domain name (trevorsullivan.net) that I would like to use for the Office 365 services, but also to manage my Microsoft Azure subscriptions. 

Since I have two separate Active Directory tenants, it's not possible for me to associate my domain name (trevorsullivan.net) with both of them. I would like to find a way to achieve this, however. How do I point my Office 365 subscription at my Azure Active Directory tenant, instead of the AD tenant that was pre-created just for Office 365?

The bottom line is that I have two AD tenants, but need to merge them into one.

Cheers,
Trevor Sullivan
Microsoft MVP: PowerShell

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