I filed my PR card renewal application last year (August 2011) and in december, the status shows approved. Then my application was sent to client services department for further review. On March 22, 2012, they send my application to local office in Windsor. On the letter, they mentioned it might further delay and visa office will contact you if any information is needed. How much time does Windsor office takes and why they sent it to local office, when in December it says my PR card application was approved . Does anyone has same experience?