Trying to rewrite history might work for Polands image at home but you're not really fooling anyone else but yourselves.
Actually, only Poles and Jews could give a damn about this. For both, making news of the Holocaust is a good thing because its helps to keep the memory alive.
Poland has NOTHING to loose over the discussion because Israel has successfully distorted the history to remove Germans as the perpetrators of the Holocaust. Holocaust denial is rightly illegal in Israel, yet that is precisely what some parts of that society are actively participating in.
Maybe someday you will come to realise that the truth is far more complex than black and white and that Catholics and Jews were equally at present and victims of, the Holocaust.
Until then, Poland not going to accept that it welcomed an invasion than destroyed it as a nation and killed 6 million of its citizens. No way. Never.