The Disney Afternoon? Not a trace... THAT IS, until I accidentally ran across this the other day:
As best I can tell, this promo ran as part of something called "Disney Day Off," a Disney cartoon marathon that ran on a local station. (Note the occasional display of the air time of the syndicated series.) It makes sense that Disney would use the opportunity provided by buying time on a local channel to spread the word about its new series, especially since airing it exclusively on The Disney Channel would have reached only a small portion of the potential audience.
It's amusing to note how blithely Disney uses the names of such Carl Barks supporting players as Gyro Gearloose, Magica De Spell, and the Beagle Boys as "hooks" to snare viewers' interest. How many kids in 1987 could have been expected to know who those characters were? Evidently, the company was figuring that the "lure" of the supposedly better-known Scrooge and HD&L would be enough to entice eyeballs. Even that seems something of a stretch, despite the then-recent revival of American Disney comics.
The obvious followup question here is, are there any more of these featurettes floating around? Perhaps one focusing on Scrooge, or one focusing on the Nephews? It wouldn't surprise me.