Derived parts created this way include any features created in the context of the assembly. For example, you can create a cavity in a mold assembly, then derive and cut the pieces of the mold. The derived parts maintain the necessary references to the components in the assembly. However, you cannot insert the derived component part back into the assembly.
If you need to include assembly features, use a derived component part. Otherwise, use a base part to optimize system performance.
The component must be fully resolved (not lightweight) before you can create the derived part.
To create a derived part from an assembly component: