Edited Google Calendar Repeated Events Show up as duplicated events in weekplan

I created a repeating event in Google calendar (e.g. M, W weekly for forever). Some time later also in Google calendar, I edited an instance of that repeated event to start or end later  as well as the title of the event ---  only for that instance (e.g. y Feb 5th instance only, not future or previous events). My guess is that WeekPlan is getting two copies of this event for that day and does not correctly handle this case. All of this was done before syncing was done.