you're not missing anything... same happens to me on my WP7 phone as well as my Android device. my workaround is to find the meeting on my calendar and manually delete it.
d.cortez || HTC One (M8) || SGN 3 || Nexus 7 (LTE)
"My life has no purpose, no direction, no aim, no meaning, and yet I'm Happy. I can't figure it out. What am I doing right?" --Snoopy