Read this carefully . you will get your answer
http://www.cic.gc.ca/english/resources/manuals/bulletins/2012/ob485.asp
Upon receipt of the application, the processing office will confirm that:
The PR applications under one of the classes (CEC, PNP, FSWP) has been found eligible;
the applicant is currently in Canada; and
it is confirmed that the applicant currently holds a valid WP that will expire within the next 4 months and there are no other issues of concern
We need to be in Canada while applying.. It doesn't mean we shouldn't leave ..
Every question answer you will not get in Black and White. any diversion from Operational manual is treated as Illegal. (That's why I mentioned in my previous post).
Rest is up to you . after all it's you application your decision.
Good Luck