Had the same doubt and dropped an email to CAQ department..
Below is their reply...
TRANSLATION
Subject: Receipt of your
Québec acceptance certificate for studies
Dear Sir or Madam:
It is impossible for us to tell you how long it will take to receive your Québec acceptance certificate for studiesbecause it depends on mail delivery times in your country.
However, as soon as we send you your certificate, we will
on-line file. You must print out and attach this confirmation to the application for a study permit that you will present to the Canadian visa office.
If, after receiving your study permit and visa, you have still not received your Québec acceptance certificate for studies, you may request a duplicate once from Québec by phoning us at one of the following numbers:
Montréal area:
514-864-9191
Elsewhere in Québec (toll free):
1-877-864-9191
Access by teletypewriter (Montréal area):
514-864-8158
Our telephone service is available at the following times:
Monday, Tuesday, Thursday and Friday: 8 a.m. to 4:30 p.m. (Montréal time)
Wednesday: 10:30 a.m. to 4:30 p.m. (Montréaltime)
Yours truly,
If you need to communicate with us again, please use our secure form available at
www.immigration-quebec.gouv.qc.ca/email