In Upgrade_proto the param of bn layer is clear

In upgrade_proto.cpp, the param of bn layer is cleared but I want to set param::name and it's cleared.
eg. two bn layers share parameters...
So

if (net_param.layer(i).type() == "BatchNorm"
        && net_param.layer(i).param_size() == 3) { 
      return true;
}   

seems wrong ...