You can read about flag-polling at the following links:
http://www.canadavisa.com/canada-immigration-discussion-board/entry-by-road-into-canada-t66864.0.html;msg800426#msg800426
http://www.canadavisa.com/canada-immigration-discussion-board/question-about-flagpole-t126121.0.html;msg1908763#msg1908763
No, it does not. OB420 is for those who holds work permit and received CSQ but did not send PR application to federals yet. So those can apply for work permit renewal without LMO.
Btw, I renewed my WP using OB420, my employer did not apply for LMO.
http://www.cic.gc.ca/english/helpcentre/answer.asp?q=064&t=10
I need to leave Canada and I do not have a PR card. Can I later return to Canada without a PR card?
If you plan to return in a non-private vehicle, such as a plane or bus
If you plan to return to Canada in a commercial vehicle —...
Bridging Open Work Permit for those whose WPs are due to expire within 4 months while you await final decisions on PR applications.
cic.gc.ca/english/resources/manuals/bulletins/2012/ob485.asp
I do not think that this statement 100% accurate. My ECAS changed to In-process 3 weeks ago and I did not receive any requests from CPP-O. Moreover, I sent email to CPP-O last week asking about the status and received standard response: "no actions from you at this time".
It means that it will not be required to send original passport or copies of passport pages (if you are from visa-exempt countries) to Detroit. Still we have to do landing procedure either at the border or in local CIC office, I think.
Effective November 27, 2012 Case Processing Pilot-Ottawa (CPP-O) will begin to print Confirmation of Permanent Residence (CoPR) documents and permanent resident visa counterfoils (if required) for applications processed to finalization in that office...
No, I did not except AOR and Med request. I sent them e-mails twice one with copies of renewed passports and another one with copies of renewed work permits.
My ECAS changed to In Process today - We started processing your application on November 20, 2012.
Category: QSW
Visa Office: CPP - Ottawa
App. Filed: Feb 23/2012
AOR&Med Request: Apr 25/2012
Med's Done: Apr 30/2012
In process:Nov 20/2012