Hello,

The STL functionality for Spaceclaim imports that geometry as reference, you effectively have to rebuild from scratch using that data, it's really not brought in as something to modify/use directly.

http://www.youtube.com/user/SpaceClaimCorp#p/u/5/Z5RR24RcOdw

Personally I think there are many other useful things that could be included in MoI before getting to something like this.