I just received a match to LAN Comodoro from my United 1K status. I emailed [email protected] in Spanish with my request and attached a photo of my 1K card along with 1 year of history from the Mileage Plus website. I received a reply within one day asking for my last six monthly statements. I was a bit confused by this but I just went back to the MP website and created PDFs of each of the previous six months. Sent that off and within a week I was given the match! Not sure how long it will be good but I can report back once I receive that card.