well answered dmac, san ka magland once visa is received?dmac11 said:What you can do best i suggest, is to reply the same email from which you got the MR and highlight to them that you need the extension of the said NBI clearance. You are required to explain as well on why there is the need for such.. In these cases, mostly, there should be an attachment of any form or corresponding that will prove na matatagalan ka ma obtain yung clearance.. (eg. receipt indicating the future date of the release).
Kindly take note po, that the given deadlines set by VO's are strictly implemented. They can be one of the reasons for refusal/rejection as stated below. Kaya mas maigi na ipaalam mu sa VO to grant you extension. They most likely will.
2. A Missed Deadline
In order to expedite the immigration process, Citizenship and Immigration Canada (CIC) often implements deadlines for individuals to submit certain forms. However, missing just one of these deadlines could mean an application is denied. Because of this, it's vitally important that you know how and when to get hold of certain documents, and the dates they need to be completed and submitted.
Source: http://www.visaplace.com/blog-immigration-law/canadian-permanent-residence-application/5-reasons-canadian-permanent-resident-visa-rejection/