Technically 5/01/11....but there have been a ton of questions as far as how to handle people who when looking back now might be disqualified under the new guidelines etc. Not sure exactly how it is all being handled yet, but we are to check with HR/Safety before issuing any PIP. I'm sure i'll get to find out soon enough. I'm not sure that we can just say from this date everyone has a "clean" slate and anything after it falls under the new regs.....but that would make it a lot easier to apply.
Has to be a FULL two years before it drops completely off your review. If your review is due in say May 2011, the review time frame is April 2010-April 2011, with the exception of vehicle/worker safety which would go back to April 2009. If that occurrence was in the system correctly and within the 3 day time frame as required, the review system would have automatically calculated it in to your review....may want to double check the dates etc....seems odd.