Hello, I was eligible for h1b dropbox in Canada on the AIS Website. I paid the fees I got the instructions to send passport for h1b visa stamping. However, I never sent my passport because I went to India instead for stamping. Now I have to change from h1b to h4 visa due to layoff. But when I log in the AIS website it still shows to send documents for h1b dropbox. There is no way I can change this to h4 visa class. Tried emailing them but no response. Any body changed visa class after appointment confirmation in Canada?