Mesh in parts and .bhv files.

Hi there. Thanks in advance for enay help on this. Im pretty new to blender, Im loving it but finding some bits tricky.

I have had a mesh built for me and I am using .bhv files to get him moving.
When I apply the bhv file to the rig I am getting parts of the mesh and head leaft behing as the he walks.
When I go the edit the mesh the parts seem to be attached (joined).

Ive attached a screen grab of the trouble where you can see the left over bits.
Does anyone have any ideas how I can get all the parts moving and attached to the rig?
Many thanks :slight_smile: