Using previous alternate email as apple id I have a serious problem here:

I would like to change my apple id to the email address that I mainly use which happens to be the alternate email. So what I did was to change the alternate to another email thinking I would be able to now use the old alternate as my apple id. Unfortunately and for some very strange reasons,apple is telling me I cannot use alternate email as my id when I had actually changed and verified my new alternate email. Can someone please help me out here?
According to Apple's support page: 


Go to My Apple ID, click "Manage your Apple ID," and sign in.
Delete the alternate email that you have. Click Yes when it asks for confirmation.
With the Name, ID, and Email Address drawer selected, click Edit next to Apple ID and Primary Email Address.
Enter your new email address.


I just applied the following steps above to my own Apple ID and it did not complain.