Azure admin account lost after EXT conversion

Hi,

I had an account at ******@mycompany.com to access my Azure portal.

I also had a personal account with the same address to access my Microsoft account.

I requested to integrate the Azure tenant from the Power Platform, thinking they would merge.

In my Azure platform, I converted the EXT user (including global administrator and billing administrator) to ******@xxx.onmicrosoft.com.

When I tried to log back into my Azure account with my ******@mycompany.com address (as before), I was rejected because my password was no longer valid. After a reset, I was rejected again, this time with a token-related connection problem.

The only access I have now is ******@xxx.onmicrosoft.com, which works for Azure, but without owner privileges.

I have two questions:

• Is there a way to reassociate the old tenant with the current one?
• Do I have the same rights as the global administrator as the owner?

Thank you