The prog wasn't shown in Portugal because the Police there decided very early in the investigation that the McCanns were responsible. They crawled all over the apartment and car, testing for DNA and found nothing they could use. They never seriously pursued other options, detectives from the case squad leaked to the press and even published in books their opinions that the McCanns knew exactly what happened to Maddie, and the case was closed as far as they were concerned. They now refuse to waste time or manpower on it and won't assist.
Maybe they are right. I have no idea, BUT it is unforgiveable in my view that they are not making the slightest effort, just on the offchance they got it wrong and that little girl has been passed around by perverts for six years due to their lack of effort to find her....