You need to use the 'recursive' parameter (value=True) when using EntityType.
Having said that, if you load a model with hierarchy in-tact (LoadAnimMesh), and have collisions on each child object, you'll likely get yourself into all manner of trouble.
For instance, if you have a car; chassis plus four wheels, and you're doing collisions on individual wheels, then its likely that in the event of a collision, one or more wheels are probably not going to be visibly attached to the car for very long, because objects either stop or slide in the event of a collision.
Having said that, if you load a model with hierarchy in-tact (LoadAnimMesh), and have collisions on each child object, you'll likely get yourself into all manner of trouble.
For instance, if you have a car; chassis plus four wheels, and you're doing collisions on individual wheels, then its likely that in the event of a collision, one or more wheels are probably not going to be visibly attached to the car for very long, because objects either stop or slide in the event of a collision.