On day 9 I went to the missing miles form on the UA website, entered the ticket number (it was on 016 stock) and the whole itinerary came up (including the outbound UA segments). Everything was grayed out, so I couldn't delete the UA segments nor add any seat/fare info where it was missing. Submitted it all and the summary screen showed the UA segments denied (since they had already posted) and the CM approved. It immediately showed up in my account. Pretty painless.