10 weeks here in Montreal, at the end the matter is subjective and how you present the whole bunch of documents to the user (CIC staff):
Wife got the pre test RQ, we sent all available records end of March, before the 45 calendar days submission limit.
Mainly we sent:
All lease agreements, all property and mortgage deeds, all property insurance, Hydro, everything that we could find related.
Printouts for all our checking account transactions from Day 1, and Credit cards
All health records from employer insurance and Quebec insurance
All kids school records
All our (mine and wife) T4s and tax assessments+returns
Wife school records from Linc and Quebec institutions (language)
Drivers licenses, car and house insurances.. all
Cars purchase agreements
All stamps on passports translated by certified translators and passport copies..
We organized all the documents in folders, each folder addressing one question section.. the officer had to go by question and folder to find everything they need, each folder had the list of documents enclosed Ex: "Kids school records (school name) years", "Checking account transactions, monthly detailed MM/YYYY to MM/YYYY" ..
From day one we never dealt with cash (wife had trouble to adapt the first few month as she comes from a country where cash rules and debit/credit cards were dealt with suspicion) so by the bank transactions they can trace every day of our life from the morning Tim's coffee to the evening movie ticket and popcorn purchase..
I collect every bit of paper since day 1 we are here.. I have a whole section in my library full with folders related to various categories (Bank documents, Education, Insurances, receipts, Deeds, etc... for our family of 4) wife will be more than glad to get rid of those when we will get the citizenship to replace with her favorite books

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Lastly this might explain why 3 days ago ecas got updated and she got her test scheduled for next month, 10 weeks after submitting the RQ pile of documents weighting 4KGs
