Is there a way to do this?  <:-D

I want to use a surface in context of my assembly to cut a face on a part; that much I can do if I edit the part in context of the assembly and knit or use 0 offset method to catch the surface (then split using the surface).   I find if I lock it, then break all external references it seems to hold ok if I switch configs back and forth in my main asm (even if I turn off the part that was used to generate the surface).  However, if I edit the part and back up before the surface-cut feature was added in order to change something else in the feature tree (a hole or a boss extrude), I notice the surface knit feature blows up red and then im forced to recut the surface again in context of the assembly part.

Isnt there some way to truly copy knit or offset surfaces into a part file in context of an assembly but fully sever the context so that the surface geometry remains truly independent - as though it were an imported surface body inside of the part itself instead of a context generated surface body???