Yes. As far as I know only the pz3 -- scene file -- format will save the complete simulation. What is working pretty well for me is as follows; Run the cloth simulation. Scroll timeline up to that moment that looks best. Export wavefront object for that frame, exporting just the cloth object. Roll the timeline back to zero, delete the original cloth, import the new cloth object. You now have a figure on Frame One, with draped clothing, that can be saved to the library. In addition, the cloth groups and settings are also saved within that cloth object, so the next time you run a simulation you won't be starting from scratch.