old apple Id
So I've had the Apple ID associated here for a long time, ever since they were offered to customers. Recently, I moved, and created a completely different Apple ID for a MacMini that runs my home automation system. There is nothing on this computer to point to my original AppleID... none. In the System Prefs, there are 2 email addresses associated with my new account, one a personal email, and the end, an iCloud.com email address. The personal email address is not associated in any way to my original email address. There simply is no connection.
However, whenever the AppStore wants to update apps on my MacMini, my original AppleID is listed and grayed out so I can't change it.
How can I purge my old AppleID from this computer?