Forgive me in advance if this has been covered elsewhere but with the search function down and the google search not being very functional....

My existing DONE5 is ticketed is as follows:

...SCL-UIO,LIM-SCL-GIG-MAD.....

I would like to change it to the following:

...SCL-LIM-EZE-GRU,GIG-MAD....

The problem that I have run into is that the One World Schedule on the website does not appear to show any direct flights LIM-EZE (the schedule seems to return flights that all connect in SCL, and not one comes up as the same flight # throughout, although it appears from Lan's website that LA 601 flies LIM-EZE, stopping enroute in SCL) . I know that Lan Peru flies LIM-EZE directly on two different flights, LanPeru 427 & LanPeru 515. Can either of these flights be booked on a xONEx? I know that Lan Ecuador is explicitly non permitted. The AA agent that I talked to cannot "see" the Lan Peru flights. Maybe the flights are seasonal?