Unbelievable decision of NGC

it's amazing the decision of NGC to throw out all PCGS graded coins from their world registry set. were is the respect that NGC should have for all these collector's including myself regarding this decision. It's understandable that after Jan. 31 , 2012 , NGC won't accept in their registry PCGS graded coins , but after all the work and financial investment that we the collectors have made to make a set a #1 or #2 and suddenly the set will go to a very low position , because of this unilateral decision. It's not right from NGC to do this , especially that PCGS , as NGC says, has extremely similar grading standards as NGC , the reason to accept PCGS in their registry sets.