Okay..let's do this with an example:
Suppose, when I applied, I had chosen my visa office as Buffalo, even though I could have chosen my home country as my VO (Suppose NDVO). I chose Buffalo because I was currently residing in that jurisdiction ( in terms of available CIC options) and I had a job and believed that my PR application would be processed during the time frame I would live there. Also, did not anticipate unfortunate incidents as losing valid Visa, in this case US visa or losing job; and in both these case I would either return to my home country or go to another place with a job......in either case it is very IMPORTANT to inform VO.
There was a case similar to the one being referred to now ( I forget the name...but will try to find on the forum), wherein the applicant had moved back to home country, and later was asked for POF. The applicant had initially applied by showing that he had a job in US and thus did not require to show POF, but the composition of the PR application changed the moment he moved and lost his job. And now it was pertinent to show NEW POF which the applicant did not show (I would say he was not aware that he had to show until asked by VO...claimed that it was not his fault)...as he waited, he got a refusal letter from VO as POF conditions were not met. I had to deviate from the initial example as this is IMPORTANT as well.
So, the ONUS is on the candidate to be aware of the rules and fulfill the requirements.....in case (ur friend's case....he has not fulfilled the POF requirement..then he is setting his application to fail...PLEASE check with him).
Continuing with the example:
Once my file is transferred to VO, then a whole lot of investigation is performed (we all know that)...in my example at Buffalo. Now, if Buffalo VO finds something (really fishy or needs further investigation) in my file that has a reference to my homecountry, in my example India, and can not be done by Buffalo.....only then the PR application file will be transferred to NDVO....and this is what is called "Enhance program Integrity". Only the VO (1st choice on application) can make this decision. Requests from applicants will not be entertained at all.
Just imagine this situation: Many applicants change or lose jobs unexpectedly and if all those applicants keep changing their VOs randomly at any point during the Processing, then CIC will be in a mess ( in addition to the pile of problems that they are already dealing with).
Hope your friend can manage to attend the Interview and solve the problem.
All the BEST....
I deliberately chose to write a detailed explanation for the benefit of newbies. Other experienced membere ...please ignore...
Mitali
NB: Please refer to the link below and the post by mastcanada.....I came to know later that he has successfully landed in Canada, despite his request to transfer his file to his home country.
http://www.canadavisa.com/canada-immigration-discussion-board/deniedletter-from-the-embassy-t53142.15.html