I didn't talk about EB-3 India filing dates moving beyond 2010. My point was there can't be deluge of downgrades before July 1,2009. There may be a few hundred downgrade cases maximum till July 1,2009.
Unless you already had EB-3 I-140 approved, you have to go through new I-140 and link that I-140 to your existing EB-2 case. For people in April 2009 it doesn't make sense as they may get their green card in the next few months or so. So the dates moving(not moving) to July 1,2009 is not because of EB-2 to EB-3 downgrades.
The real surprise was CP numbers for EB-3 India.