There are at least 2 residence tests that citizenship judge may choose to assess "residence" for the purpose of granting citizenship-- qualitative and quantitative, but there's only 1 RQ form. Qualitative test looks for quality of ties to Canada, and based on this test citizenship may be awarded to those who spent less than 1095 days in Canada prior applying (it's not always possible to accumulate 1095 days in 4 years, in certain occupations). Therefore ties to Canada should be examined and that would include periods after application. I must add that at least now qualitative test can be applied by judge only after quantitative (1095 or more days of physical presence) fails.
http://immigrationlawbc.com/judicial-division-on-%E2%80%9Cresidency-test%E2%80%9D-for-canadian-citizenship-continues/
"As previously written in this space, the current Canadian Citizenship Act requires that a Canadian permanent resident have at least three years of residence in Canada in the four year period immediately before a citizenship application is made, among other things, to be eligible to apply for Canadian citizenship. However, “residence” is not defined in the current legislation. This lack of definition has led to multiple judicial tests of “residency”, one requiring physical presence (a quantitative test), the other looking at “constructive” residence (a qualitative test), which is sometimes referred to as the Koo test. In turn, that has created an unsatisfactory state in the law."
Plus a judge must be sure that at an oath time an applicant still complies with PR residency requirements to be eligible for citizenship, which may become in question keeping in mind lengthy processing times to finalize applications. In some cases information about residency after application date may help to ensure that judge can draw a decision.