[AlanShutko]

For me, the easiest thing is to leave the task there, then when it shows up on Sunday night, if I know the meeting has been cancelled, just mark it completed so it advances to the next week. Unless you're using your completed items for some type of reporting, it doesn't hurt to have it there. If you ARE, then you can check it off so that it regenerates, then delete the checked version from the screen.