Edited or deleted reoccuring events are not being removed in the subscribed calendars. For example, if I change the date of one of the reoccuring events both the original event and the new event will be listed in subscribed calendars. However, the ZapCalendar does show the event correctly. Take a look at the this image which shows the subscribed calendar over the ZCalendar version. the subscribed calendar shows the same event on the 22nd and 29th.

i would thing once it is on your calendar zap cal cant take it off why dont you put it back in zap cal and put canceled.

Thanks. I have verified the problem from here. I will work on a fix for this.

I just e-mailed an updated plugin to you that should fix the problem.