I moved a custom domain from one tenant to another. I then deleted an enterprise application from the old tenant and re-created it on the new tenant. But when I try to change the "External Url" in the new tenant, I get an error message stating that "External Url entered is already in use for an application on another tenant." I checked the old tenant but the custom domain is gone. The enterprise application is gone. The app registration is gone. I even deleted the app in "Deleted applications (Preview)". What do I need to do more? Or is there a mandatory waiting period?