Answers from the forums I asked about the question, "Is it indicated in our AOR CIO the Visa Office who will process our application?"
"Any future correspondence should be sent to the visa office as indicated on your application"
No specific indication of the Visa Office.
One member who is currently residing in Singapore decided to email CIO,CEM and SGVO to inquire about his AOR VO. He felt that it's been a long time already after his AOR CIO was received and that time he should be receiving his AOR CEM (VO of choice) & MR. The next day, he received an email from SGVO stating that his papers is still in-transit from CIO to Singapore Office. He knows for a fact that in Singapore the processing time is 20 months against the Philippines which is only 11 mos. So, he wrote them a letter requesting a transfer to CEM as originally requested and luckily SGVO replied soon. They have granted his request under the basis of R11 rules. This is the link http://www.cicnews.com/2011/01/understanding-r11-visa-office-submit-application-canadian-permanent-residency-01826.html. Last Wednesday he received his MR from CEM and notification from SGVO that his papers have been transferred and received by Manila Office.
The other member's choice of VO is also CEM and since he is working in Qatar his application was forwarded to ABuDhabi Visa Office (ADVO). He received his AOR CIO last year June and until now no AOR from ADVO and MR yet.