Although I would like to claim credit for this, I don't think I can :)
A little bit of history.
In 2008, AFC announced two 2011 Asian Cup spots would be available for the 2008 and 2010 winners of the AFC Challenge Cup.
On 28 July 2008 I wrote to FIFA asking them if they will change the status of AFC Challenge Cup matches for FIFA ranking purposes from friendly (1.0 multiplier) to continental qualifier (2.5 multiplier).
"While we can follow your line of argumentation please note that the AFC Challenge Cup will continue to be rated as 'friendly' (like other regional competitions with developmental character elsewhere in the world). The one Asian Nations Cup spot at stake is regarded as a bonus with the vast majority of participants coming through the one and only preliminary competition."
In February 2011, CAF asked FIFA to include CHAN matches in the FIFA ranking.
On 25 February 2011, I wrote to AFC and all Challenge Cup teams suggesting them to follow CAF's example and ask FIFA to upgrade the AFC Challenge Cup matches to continental qualifier status. I received no answer.
Yesterday, I received an e-mail from Filipino Football about the change of status. You can see it for yourself in the Fixtures and Results section on FIFA.com.