Obviously I agree with all the suggestions above, which are consistent with well-established consensus, that:
(1) it is important to check "yes" for the item in the application which gives IRCC consent to access CBSA travel history (there is a potential delay if "no" is checked; I'd guess a LIKELY delay if "no" is checked), and
(2) separately obtaining a personal copy of the CBSA travel history will have NO impact on processing the citizenship application, and
(3) applicants who are not certain of precise travel dates can help (but only help) verify travel dates by obtaining a copy of their own CBSA travel history, but
(4) it is important to NOT rely on any other single source of information, including the CBSA history, including passport stamps, or any other records . . . for the prospective applicant who failed to keep exact and complete records of all travel abroad, that individual needs to make a concerted, diligent, and thorough search for and review of any and all relevant sources of information to make sure, as best the applicant can make sure,
ALL DATES of EXIT, and ALL DATES of ENTRY are reported as accurately as possible.
Leading to the more important aspect of the query triggering today's posts:
Ok that’s good that we do not need to submit record of entry exit but do we need to mention all the entry exit in physical presence calculator
Yes. As accurately as possible.
All dates on which the applicant left Canada, even if the applicant returned to Canada minutes later, need to be reported in the physical presence calculation.
ALL and ACCURATELY. Likewise dates of entry into Canada.
ALL and ACCURATELY.
There is some leeway, some allowance, for minor errors, even omissions, BUT many of us will make an error even if we diligently aim for perfection, so it is critical to make a zealous effort to get it right, to report ALL dates of entry and exit, and to do so ACCURATELY.
An applicant who did not keep complete and accurate records really needs to assess how confident he or she can be about the dates based on additional sources. CBSA records will provide for-sure entry dates, but NOT necessarily ALL entry dates, and usually does not provide exit dates or not nearly all exit dates anyway. If for any reason the applicant is not highly confident that he or she can complete the physical presence calculator very close to perfectly, the applicant would be wise to consider:
-- making sure to have a substantial margin over the minimum
-- making sure he or she otherwise has an easily documented case (strong evidence of where the applicant has lived and worked and such, no gaps, none)
-- possibly waiting longer until uncertain travel periods are no longer within the relevant time period . . . or at least there is no such period within a period which solidly encompasses three years of presence plus
-- and if there is any estimating of dates or trips, be sure to acknowledge this (could be stated in the box for describing travel reason)