Move email alias to different iCloud account?

Your question has been answered. No. When an ID was created or why is irrelevant.

I'm afraid that hasn't changed since this answer was given. Likely never will.

Feedback for Apple goes here >>> http://www.apple.com/feedback/

Hi Matt13,

Thanks for using the Apple Support Communities! With regard to iCloud email aliases, they are tied to the original account that created them and can't be deleted and recreated or transferred, as noted in the following article:

Notes:

• If you had more than three aliases when you moved your MobileMe account to iCloud, you can keep those aliases until you delete an alias. If your total number of email aliases in iCloud is more than three and you delete an alias, you will not be able to create a new alias to replace the deleted alias.
• Aliases are not transferable. Only the iCloud account that created the alias can use the alias.
• If you delete an @mac.com or @me.com email alias, you cannot add it back to your account. For more information, see iCloud: About your @icloud.com, @me.com, and @mac.com email addresses.

iCloud: About email aliases - Apple Support

Regards

No problem, glad to be of assistance.

Cheers

This is an unacceptable response. This needs to be fixed.

Here's why: we, along with most likely millions of your customers, created aliases for our children when wee were unable to get them their own apple ID. Now with family sharing they have their own Apple ID, and would prefer to control access to their email.

You can either figure out a way to make this happen, or have happen what happened in our household: they all got gmail addresses.

Yes, but can an icloud alias created for a child before child accounts were a thing be deleted, and used after deletion as a child account?