I found some time to call Aer Lingus. They confirm they still show my original itinerary, including their segments in Business Class.
United.com continues to show it incorrectly as Economy class.
Still makes me nervous, but I will just show up and hope everything works out.
I would be interested if anyone else sees this type of glitch on partner awards.
Trying to remember the last time I had a partner award trip that didn't involve some type of glitch/drama/worry.