I keep meaning to cover this one comic story and I finally remembered it, so here we go. I think all I have to do to sum it up is mention that it features Scrooge and Magica, and its title is "Body Swap"
INDUCKS info. This was first printed in Denmark in 2006, printed in America in U$ 366 in 2007. Written by Lars Jensen and drawn by José Massaroli. And it has the best cover by Marco Rota, just because of the notations it felt were needed.
Scrooge is rightfully worried about Magica being in town, because no sooner does he voice it than she appears! Her standard foof bombs don't seem to have an effect so they get while the getting's good, but...
As probably obvious by the title Scrooge and Magica are now switched! And Scrooge is having problems with how notorious a villain she is (and the "no money" thing mentioned before). He (she?) is down for a moment, until that old spirit flares back and he
....with the unfortunate side effect that she's spending Scrooge's money without anything else coming in. So she sets off for her own home, which ALSO isn't suspicious, while Scrooge is just now getting there.
Scrooge takes stock of the situation as Magica and her minor army arrives, and the two forces collide. Unfortunately, years of dealing with Magica gives Scrooge the upper hand, even on her own home turf.
Magica lets a little too much slip and Donald finally gets it, after several in-universe days. (To be fair to Donald it didn't seem like he was with Magica at the resort so...? also, "the ladies' room at the airport" because yeah sure they went there, why not)
So there's Body Swap. I actually hadn't come across this one until recently, but it's already coming out to be one of my favorites from Egmont Group (the Danish publishers; you'll see them listed as Gutenberghus Group in earlier comics). The art is classic Egmont style, and yeah XD Like harpiesiren said, body swaps are always fun X3