Third party email address Apple ID for my iTunes - mac.com address for everything else
I have an Apple ID using a third party email address for my iTunes and an Apple ID using my MAC.com for everything else. I want to get rid of the third party Apple ID email address for iTunes and change it to my MAC.com email Apple ID AND make sure my iTunes music, apps and movies I've purchased over the years follows with it. I'm told I can't do this but that doesn't feel correct. How or can I do this?