upgrading dot mac to full membership

[Kevin Callahan]

there's a "Note:" at the end of the instructions:

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Upgrading an email-only account or Family Pack sub-account to a  
full .Mac membership
If you have an email-only account or a Family Pack sub-account, you  
can upgrade to a full .Mac membership at any time.

To upgrade to a full .Mac membership:
If you're not already logged in to .Mac, go to www.mac.com, and log in.
Click Account in the left column of the .Mac homepage, and then  
confirm your login.
On the Account Settings page, click Join Now and follow the onscreen  
instructions.
**** Note: If you purchased a .Mac retail box, you can use your  
current member name and password when you activate your full .Mac  
membership.

=================================

it appears if you did NOT purchase a .Mac retail box and you had  
purchased dot mac online (like many of us), then you can't use your  
"current member name and password".

ah !  makes perfect sense :-(

so all 4 of my "email-only" accounts are ineligible for upgrade since  
I purchased my full account and my extended/email-only accounts via  
www.mac.com ?

from the upgrade panel at dot mac:

"To upgrade your account, please provide the following information  
and click continue.
First name
Last name
Current email address

** Please enter an email address that is not .Mac. "

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I hope I'm completely misunderstanding something here.

k