importing edited object rig from blender to s4s

i edited an animated object's rig in blender to suit the changes i made to the model. when importing the new mesh to S4S, the rig doesn't get updated automatically. i could update it manually in S4S but it takes a lot of time. is there a way to automatically get the correct placements for my edited rig imported into S4S?

it would also help to know what's the most efficient way to manually edit the rig in S4S if that's what i have to do.