Groove Agent Styles/Midi View

Hi there,
I load a kit and a pattern and the pattern will play when I am in the “MIDI” view, however when I go to the “STYLE” view the pattern stops playing?
Some kits/patterns will play in both views however some patterns/kits only seem to play on the MIDI view.
I haven’t worked out yet if this is a kit issue or a pattern issue or if this is just to do with the particular programming of the kit or pattern?