Discussion from MORE CONFUSED PERSON:
My computer does not allow me to type Chinese so sorry for that.
My understanding is that Processing Dates is a "TIME POINT" set by CIS, based on the explanation from CIS web(I will paste it later), you can estimate time frame for your cases. For example, your cases were ted on Oct, 2006,and the Processing Time( or Date) is Feb, 2007, that means your cases are more than 30 days outside CIS normal processing time, you can HELP them by calling CIS to do something for your case( it is said by the web, we can wish).
Second, your cases were ted after the processing date but got approved. My understanding is the officials are STILL WORKING even they set a Processing Time….
Following is the information from CIS
If Your Case Is Outside Our Current Processing Time
The processing times that we publish let you estimate how long it will take us to process cases filed before yours, and then process your case. However, every case is different and sometimes an individual case can take longer than average.
If you don't hear from us within the normal processing time, check for updated processing times on our website. If your case has a receipt number, use it to check on the status of your case at the same time. We recommend this action on your part because our notice may be on its way to you.
If at any point your case should become more than 30 days outside our normal processing time, and you haven't received a written decision or update from us within the last 60 days, you can help us by calling customer service and letting us know. We will research your case, see what needs to be done to get it processed, and get back to you with an explanation.
The extra 30 days is to allow time for any notice from us to reach you as we process your case.
If you filed a Form I-765, Application for Employment Authorization, and it has been longer than 90 days since you filed and you haven't gotten an update from us within the last 60 days, and have not seen any public notice that addresses your case type, please don't wait the extra 30 days. Call customer service immediately.