I've imported an ics calender, which was created by KOrganizer. "Normal" events are imported correctly. But series appear one hour to late.

An example: I've an event every sunday at 11:00.
The Zimbra calendar shows it at 12:00.
When I open the series, 11:00 is shown as startup time!
When I open the instance, 12:00 is shown as startup time!

Have you any hints for me, how to correct this?

Thanks & kind regards