Stale domain association for deleted app blocks new app - allisterevents.okaywinston.com

[ianmcall]

Issue

A domain association for a deleted Amplify app is blocking a new app from claiming the same subdomain.

Account: 026090538781
Region: us-east-1
Subdomain: allisterevents.okaywinston.com
New App ID: d24nyugd8w0wp3

Steps to reproduce

1. Had an Amplify app with domain association for allisterevents.okaywinston.com
2. Deleted the app
3. Created new app d24nyugd8w0wp3
4. Tried aws amplify create-domain-association --app-id d24nyugd8w0wp3 --domain-name okaywinston.com --sub-domain-settings '[{"prefix":"allisterevents","branchName":"main"}]'

Error

BadRequestException: One or more domains requested are already associated with another Amplify app: allisterevents.okaywinston.com

Also blocked at CloudFront level: CNAMEAlreadyExists when attempting to create a CloudFront distribution with this CNAME alias, even though the old CloudFront distribution (d2fb89kwqcfdsw.cloudfront.net) is no longer in our account.

Expected behavior

Deleting an Amplify app should release its domain associations so they can be used with new apps.

Workaround

Using events.okaywinston.com as a different subdomain for now.