Makes no difference if the trip was for business, pleasure, a whim, or family reasons. Days abroad count as absences, whatever the reason or purpose for the trip. This will continue to be the case even after all Bill C-6 provisions take effect.
Best to keep your own record of every exit from Canada and entry into Canada. The PR, having been there each and every time (obviously), is the one best source for this information, but of course only if the PR makes an effort to keep a record of each trip. It is worth the effort. There can be a huge difference in how things go for applicants who accurately and completely report all dates of travel versus those make mistakes or omissions.
Your business trip will also be counted as your physical presence in canada.
Exact wording from CIC website.
"Absences from country of residence outside Canada
For all applications (received before, on, or after June 11, 2015), if the applicant travelled outside the country of residence to accompany their family member as part of their family member’s duties for employment, this time can be counted as residence/physical presence.
If the applicant travelled outside the country of residence (other than to Canada) for any other reason (e.g., vacation), this time is counted as an absence.
Refer the below link (http://www.cic.gc.ca/english/resources/tools/cit/grant/residence/calculate/spouse.asp ). "
on the above its says employment- is that mean on trip more than 6 months or any 4-10 days business trip can also be considered?