@Jabra:
So are Coby and Helmeppo's ranks & outfit canon now? It's a bit confusing to be honest.
You should think this way; the characters ,including their powers, their history, their habits… are all canon.
But "the event" that happens in the movie is pure filler. It never takes place in the main universe.
The same goes to Strong World(Movie10); Shiki does exist in the main story, his df power and his crews are canon, but the encounter between him and SH pirates in the movie is just filler.
Luffy, in the main universe(manga based) might doesn't even know who the hell Shiki is - -
So... to answer your question, Coby and Helmeppo's ranks & outfit is definitely canon. I guarantee you '@'