Looks like USCIS & DOS has no Clue on Porting
From May 2011 VB
"As mentioned earlier, the number of applicants who may be “upgrading” their status from Employment Third to Employment Second preference is unknown. As a result, the cut-off date which governs use of Section 202(a)(5) numbers has been advanced more rapidly than normal, in an attempt to ascertain the amount of “upgrade” demand in the pipeline while at the same time administering use of the available numbers. This action risks a surge in demand that could adversely impact the cut-off date later in the fiscal year. However, it also limits the possibility that potential demand would not materialize and the annual limit would not be reached due to lack of cut-off date movement"
above two statements contradict each other!
Unless there is lot of porting from ROW i don't think there will be any surge of new applications with only 2-3 month forward movement to EB2IC.
Remember EB2I&C were at 01AUG2006 in September 2008.