Is there an active domain registration service under Domains -> Manage, though? Or just the web / mail / DNS services?
FWIW, it doesn't look like the transfer went through (or it's still in progress), so making the change at names4ever.com was the right thing to do.
According to crsnic, the domain is still registered by the other provider.
Are you sure that the transfer itself went through successfully? My guess is that either way, this may be an issue best handled by support.
jazz% whois d20domain.com
Whois Server Version 1.3
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
Domain Name: D20DOMAIN.COM
Registrar: ABACUS AMERICA, INC. DBA NAMES4EVER
Whois Server: whois.names4ever.com
Referral URL: http://www.names4ever.com