When you have an assembly that is WORK part, this option lets you promote a BODY from a loaded assembly component to the LEVEL of the assembly. The promote body REMAINS associative to the original body, which is referred to as the base body.

Once you have promote a body, you can perform operations on it, such as adding features, performing Boolean operations between it and other bodies, and so on. The EFFECTS of these operations are only visible at the level of the assembly work part in which the promote was created, and in any other assembly that references that part.

When you have an assembly that is work part, this option lets you promote a body from a loaded assembly component to the level of the assembly. The promote body remains associative to the original body, which is referred to as the base body.

Once you have promote a body, you can perform operations on it, such as adding features, performing Boolean operations between it and other bodies, and so on. The effects of these operations are only visible at the level of the assembly work part in which the promote was created, and in any other assembly that references that part.