Continuity mistake: When Velma is searching for her glasses during the monster attack in the bar, you see her friend in the Led Zeppelin top run away. Then the camera changes, and he is hiding under the bar again. (00:40:04)
Continuity mistake: In the scene where the van crashes into the dock's factory doors, the van is stood there in the factory. But when it cuts to outside of the factory, the van is on the road, and no-one drove it there.
Continuity mistake: When Scooby, Daphne, Mary-Jane and Shaggy are being chased by monsters and crash through a window off the luggage cart, the window is already broken before they make impact on it. (00:42:30)
Answer: It's never mentioned where they went afterwards.
MasterOfAll