Recently purchased a domain (Qinsight.com) that is on another Microsoft tenant, need to remove from the old tenant to my new business account

I recently purchased Qinsight.com from GoDaddy. When I tried to register my domain, I discovered that the domain is currently being hosted on a Microsoft tenant. I have now registered for Office 365 under QinsightTechnologies.onmicrosoft.com. Please advise so I can move my domain to this tenant and get up and running for Qinsight.com