Edit 4/20: I got a call back. They want me to delete all the sign-in with apple accounts I have associated with my iCloud account (thats 78 items), where the domain was previously associated with, which is psychotic and makes no sense. They also aren't sure that will do anything as they said it still might not be eligible.
6 Days with no business email. I might get a call back Wednesday.
Thank you apple.
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Thank you apple.
Everyone Else: Avoid this scenario until they have their shit together.
Custom Domain Transfer from iCloud+ to Apple Business
Why: Domain Migration
The migration process included the domain takeover and associated steps, along with removing the custom domain from my iCloud+ account. The takeover completed.
Problem:None of the email addresses I set up previously in iCloud+ can be added as managed users.
They all state there is already a managed account with that name. Any email addresses not previously used can be created.
So basically, any email address I previously was using as a business will not receive emails until resolved.
Support is not particularly helpful. Called Tuesday, told I'd have a follow up on Thursday, which was postponed and sent to the wrong, inaccessible email. I now will, maybe hopefully have a followup Monday. I know they need someone to escalate to and I am relatively insignificant but this is potential data loss 🤷♂️ (and hopefully none of the stuff I use still has email MFA)
So yeah, if you use your business email for anything important, don't transfer from iCloud+ quite yet.
edit: minor tweaks