If a mesh is attached to the root bone, the mesh should just be imported without any vertex groups. A mesh with no armature deformation but parented under the armature should then be exported attached to the root node,
If a mesh is rigged to the root node... should be fine to use a vertex group with the root node name as is currently imported.
If a mesh is attached to the root bone, the mesh should just be imported without any vertex groups. A mesh with no armature deformation but parented under the armature should then be exported attached to the root node,
If a mesh is rigged to the root node... should be fine to use a vertex group with the root node name as is currently imported.