It is a possibility. If the ope ope operation was actually done in the OP world then there must be a way to undo it.
If something is taken it is taken, but if something is added on the other hand.. let's say Law removes an heart, if the yami user touches that then the ooe power in the person can be undone but the heart can not be teleported back, so the insides turn in a mess said people dies almost immediately, if an arm is cut by a df then BB of course can not make it come back, same as this.
But if a body gets a plus thanks to a df, be it make flames, turn into strings.... And probably become immortal too, then I think it could work. But it is just an hypothesis.