You could also ask for Dehydrated to support deactivating a valid authorization. If the existing authorization is invalidated a new request to authorize the domain by http-01 would be fully processed.
@dennisschuerholz glad you got things sorted out! Would you be so kind as to update the Stack overflow question to have an answer and a pointer back to this thread? I’d hate for any wayward souls that find the Stack Overflow version first to be left hanging 