*For vehicles, do not active the "Make model as a single unit model" checkbox. This option will connect separate and loose parts together. This option is only suitable for objects and characters occasionally.*

**Remember: You cannot directly import a converted dff file into GTA SA, because the converted dff file has a different skeleton than GTA SA, So open your 3D software and for characters: merge the skinning data or in other words the weights data if needed and connect it to the new GTA SA armature and for vehicles: separate the parts and replace them instead of GTA SA vehicle parts as GTA SA doesn't support any bones for vehicle then export as dff again.**

***You will almost always need 3D software like Blender or 3ds Max or ZModler2 to complete the process and create the final skin or vehicle.
You can only use direct import for objects that do not contain bones.***