Can an external assembly (as "loaded viewable") be saved into a PVZ-file in Creo View?

Hello Community,

in Creo View, when I load another assembly (for example another file PVZ-2) into an open PVZ-1 using "Add Viewable to Session": Is it then possible to save PVZ-1 such that the loaded viewable PVZ-2 remains contained in PVZ-1, and reappears the next time I open the file PVZ-1?