Dear,
I have the same problem as you! the only diffrence I did my first landing on may 2008! my wife stayed there alone with my children for 6 month, than she refused to carry on alone..., I visit them 2 time and each time the immigration interview me, and warren me about the 730 days!! they do not have any records!, at the end they let me in and stamp my passport with a satmp similar to the stamp used during the 1st landing.... they will ask you starting after the 3 years you need to provide to them a real proofs about your exesting period in CANADA (They are very naugthy!!!)
I wish you all the best, and small advise do not lose your PR and try to send your Family, so your wife can sponcer you! since 2 year now the immigaration services are deeply following every things
Why are they being "naughty"? Because they're upholding the law? Compared to most other countries, Canada's policies and requirements pertaining to maintaining one's PR status are incredibly lenient and forgiving. Is requiring permanent residents to maintain a physical presence here for only 40% of the time really too much to ask?
Let's not forget that a primary goal of immigration policies is supporting the health and growth of the Canadian economic engine; to make sure that a sufficient pool of labour exists. The physical presence of Canadian residents (citizens and PRs alike) keeps the economy humming ... earning/spending/producing/etc.
Not to put too fine a point on it, but I sometimes get irritated at the constant litany of complaints regarding the immigration system. I think that too many view Canadian Permanent Residency only as an "insurance policy" to be used only if things in their countries of origin get bad enough.
/end of rant