http://www.cic.gc.ca/english/resources/tools/perm/express/invite.asp
Candidates are responsible for ensuring that the information in their Express Entry profile is up-to-date and accurate at all times.
Candidates’ Express Entry profile is automatically “locked” when they are issued an ITA. Candidates can only revise their profile information if they formally decline the ITA through their online account; however, their information may be updated in their APR. When a candidate declines an ITA, they are automatically returned to the pool and will be able to update their profile information, as they wait for a new ITA.
If a candidate realizes after having been issued an ITA that their circumstance has changed or that the information in their profile, on the basis of which they were issued an ITA, is no longer accurate, the candidate is instructed to recalculate their CRS score using the Express Entry calculator on the IRCC website. Examples of changes in circumstance that can impact a CRS score are listed below.
Where there is a change in circumstance and the candidate goes forward with submitting an APR, the candidate must ensure that the change in circumstance is properly reflected in their APR (i.e., the candidate must amend the information that was automatically transferred from their profile to their APR before submitting their application).
As per the Express Entry Ministerial Instructions, candidates are encouraged to decline an ITA if their change in circumstance negatively impacts their eligibility such that they no longer meet the MEC of the federal immigration program to which they were invited to apply, or if their recalculated CRS score falls below the lowest ranked candidate in their round of invitations. Applicants who cannot provide proof of the information provided in their profile, on the basis of which they were invited to apply, will be refused on section A11.2 and assessed for misrepresentation. Cost recovery fees will not be refunded.
Examples of change in circumstance that would impact a candidate’s CRS score
Changes that could increase a candidate's CRS score:
Graduation from a higher level of schooling;
Reaching an additional year of Canadian work experience;
Obtaining a certificate of qualification
Improved language test scores.
Changes that could decrease a candidate's CRS score:
New language test score sat a lower level (e.g., original scores expire and candidate retakes the test, with lower results);
Loss of a qualifying offer of arranged employment.
Change that could either increase or decrease a candidate's CRS score:
Addition of a spouse or common-law partner, since an applicant’s CRS score may increase or decrease, depending on the spouse or partner’s own human capital.
Change for which candidates are not penalized for losing points:
Candidate’s birthday occurs after an ITA was issued (see the Exemption to section A11.2: candidates whose birthday occurs after they receive an ITA section).