Really? That's different from what I said, I'm not so sure now .comThe offspring will be pattern Y regardless of the pattern being bred on the game. If you transfer an egg/Scatterbug from your X into your Y however, the pattern will be different.
EDIT:
This is what I thought.I presume you mean hatched in Y?
Let me give an informative answer!
Jimmy was breeding a Scatterbug in his Pokemon X. He wanted to give the egg as a present to his friend, Bob. Jimmy has the Meadow Pattern.
Bob is collecting Scatterbug in Pokemon Y. His pattern is Garden. Jimmy trades Bob the egg with the Scatterbug he bred, and when he hatches it it's a Meadow pattern Scatterbug! Bob is happy.
X,Y, Jimmy, Bobby... O.o