Transfer advice...

<p>I applied and got accepted by York Univ and some other Canadian universities in Toronto Canada in my last year in high school,like in march 2010. However, I chose a Hong Kong school and rejected all Canadian ones. but I don't like my current univ after spending a year here, and I really wanted to transfer to Canada, so i m now reapplying to York Univ January transfer admission. But the thing is should I mention in my application that I was accepted by them before or somewhat give a explanation? would it hurt my chance to get in if I mention nothing about it? Please give some advice.... Thanks!</p>