This issue involves invalid start dates on a recurring event. An invalid start date is defined as a start date that is not an instance of the series. The following are examples of invalid start dates:
For a yearly recurring event: 1st Monday every August, starting August 22
For a monthly recurring event: 25th of each month, starting November 11
For a weekly recurring event: Every Friday, starting Monday, September 17
When invalid start dates are specified on a recurring event, the instances of the event are created differently on the server than they are on the device.
On the server (Kerio web client): The first instance of the event is the start date and there are x-1 number of instances after that, occurring when they should.
On the device: There is no event on the start date and there are x number of instances after that, occurring when they should.