Can't delete user after domain change

I'm trying to delete a Docuware user that is still listed with our old domain.
User had a lot of configurations assigned but I removed them from everything they had listed.
When I try to delete the user I get "Object cannot be deleted because at least one dependency still exists"
Listed there is "Assigned to 1 Email Notification setting as administrator" but I can't find it anywhere.

Has anyone else run into this issue?

Dear Steve Harris! It looks like the Community cannot answer your question. That's why we have opened a Support Request with the Number SR-138415-W3N5R for you. A Software Support Specialist will contact you directly to follow up. We will update this thread with the solution as soon as we have resolved the Support Request. With best regards, DocuWare Support Team