I asked my lawyer in detail. She still insisted that it is ok. Her reason is that the child is a minor child who does not have the ability to decide where to live. The government will not retain the Child's immigration status because of the parents' decision. She said that some parents leave their child outside Canada for education reason for more than 6 years and they are still ok. In addition, I got another info. from another source. This lady's son lived in China for 2 years and 2 months. They didn't have any trouble at the airport when returning to Canada in Aug. 2002.
Hope above all is good news for someone who have the similar situation. Thanks everyone for your advices.
Hope above all is good news for someone who have the similar situation. Thanks everyone for your advices.