Account Transition (Mulitple WPMU Dev Accounts) Issue

Ok, so originally I had created a different account for different websites. Now I am paying for a subscription on ONE account and attempting to re-attach all of my websites to this particular account (this one). Unfortunately all of my websites are still tied to my other/previous account. I need to DELETE ALL of the website associations from my old account and move them all to this one. I can give you access to the sites if needed, I was going to attempt to go into the PHPmyAdmin and manually modify any existing tables with an incorrect API and account information locally. But I believe the issue is not a local one.

Please advise.