Bodies to parts (In an assembly)

Hi,

I want to be able to create the parts I need as bodies in a part file and then export them to a "main" assembly and thereby turning them into parts.

There's already a function called save bodies, that pretty musch does that.

But....

Lets say that I've already exported two bodies to the main assembly, but then create 3 more bodies, that I'd like add to the main assembly as parts and join the existing to.

Is there a way to this?

So I pretty much want export the bodies to the assembly "on the go". I can do this in Inventor, but I haven't figured out how to do this in SW.

SolidworksAssemblies