Switching Bindings, what is best to plug the holes on lifters?

I am switching to a different pair of bindings on a pair of Fischer RC4 skis. They have the universal lifter plates on them so the holes should not go into the skis material. What is recommended for plugging the old holes? Do you recommend all the holes get plugged or just the ones exposed and not covered by the new bindings? I am assuming you don't want water or other stuff getting down in between the lifter plates and the skis.

you don't need to plug at all. The lifter in no way is sealed to the ski, so snow/water is already getting between the ski and plate. Just re-mount and don't worry.

Yup, don't even bother.