Activating subassembly constraints?

hi,

is there a way to activate subassembly constraints so that in a top level assembly the subassembly will also move/rotate the way it is originally constrained. because when you drop in a subassembly into another assembly all constraints become fixed. this would be a huge help if i can get these subassemblies to move, then i wouldn't have to have so many constraints and seperate parts in my top level assembly.

SolidworksAssemblies