Thanks for this. I was surprised that I got additional 5 points (My husband is the principal applicant) even if my work anniversary is still on the 10th of September. Thought it was a mistake! I work 40 hours a week so it should be fine I guess.I had the same situation back when I was in the pool. From what I understood, CIC grants points for experience based on number of months not years, and they start counting the months from the first one, (like counting from zero) so you end up with the full required number of months a month earlier.
I don't remember where I read it or if anything changed in this regard so someone else can correct me if I'm wrong. I accepted the ITA back then when I still had a month to go to get my full 3 years experience and had no issues.