请问pjiang老师等大侠，
今天在USCIS web (https://egov.uscis.gov/cris/Dashboard/CaseStatus.do) 查My I485 Case Status (EB1b to NSC: I140 submitted in April, approved in Sept; I485 submitted in Oct-2009). 结果如下：
Current Status: Document production or Oath Ceremony
On December 10, 2009, we ordered production of your new card. Please allow 30 days for your card to be mailed to you…
这是不是说My I485已经批了？绿卡生效日是从通知“Card production ordered" 算起，还是从收到绿卡日算起？
非常感激！