Appointments+ not exporting pre-made (prior) appointments to GCal

Getting this error when trying to export prior made appointments...

"[November 3, 2014 8:05 pm] Error calling GET https://www.googleapis.com/calendar/v3/calendars/1p6v5dtrbq0c2ojc4tu2v1uq3c@group.calendar.google.com/events/91869m7j4tqrcd4a4t6umgvegs: (404) Not Found
[November 3, 2014 8:05 pm] Error calling PUT https://www.googleapis.com/calendar/v3/calendars/1p6v5dtrbq0c2ojc4tu2v1uq3c@group.calendar.google.com/events/91869m7j4tqrcd4a4t6umgvegs: (404) Not Found"

when someone books an appointment the Gcal export works fine, just not prior appointments