The old HK DVD released by Universe misses out three plot scenes that are featured in the newly released Fortune Star DVD.
There's also a longer Japanese version of the film. In the normal version, the end credits start rolling over a still frame, while the Japanese version shows several outtakes, for example of Jackie and Yuen Biao on their skateboards. This version was obviously initially intended to be released on the English-speaking market, too, which can also be guessed from the credits.