LAN LANPASS - How do travel vouchers affect LANPASS qualifying kms?

I know someone posted about this but now I can't find the thread. LAN has offered me an MCO voucher good for one year on any LAN flight. If I use this voucher for partial payment will it change my purchased ticket into an award ticket and render the flight ineligible for credit toward elite qualification?

Well I did it once a year ago, and my flight counted. However I would give LANPASS a call just to make sure.

I found the original discussion in the "still no elite update..." thread. Seems that maybe I was confused. LAN wrote back saying that vouchers have no effect on earning kms. I will be saving THAT email! :D
Anyway, I accepted the voucher. According to LAN it can ONLY be used at a LAN office for travel on LAN so I guess the option to convert to cash is something they no longer do ---- or is that a different flavor voucher?

Well, if they were willing to give you money, they would just credit your card. That´s why they give out vouchers. You will have to go to an office once you need to book a flight and just use your voucher as partial payment. They also give out "certificados de descuento" when one has changed a ticket and the new fare is cheaper. These are codes which can be used for any future tickets and can be applied when purchasing online without going to an office.