IMMH10-A Form Received

Hi everyone. I have just received a letter addressed to my husband advising that he is to have an interview and enclosing the IMMH10-A form that has to be completed and either sent in or brought to the interview. These were all sent to my home address here in Canada! I am hoping that this is the copy to the sponsor and that the original has been sent to his address in Puerto Plata but he has not received anything as yet. The letter is dated December 18, 2009 and the envelope has a Canada post stamped date of January 19/10 (a week after the earthquake!). This is the first (good) news that we have had regarding an interview! No date as yet though. Does anyone know whether or not immigration will accept a faxed copy if I e-mailed this form to him to fill in?
Also, thanks to everyone on this forum! The information and advice posted here has been invaluable in this process and is greatly appreciated.

This is the declaration of children form.
I guess my biggest concern now is how they will contact him to let him know the interview date. If they are sending everything to me, he might miss the date they schedule.
And I am extremely excited!!! With everything going on lately this was such a positive for both of us as we had no idea whether or not they were even working on our file.