I have a linked shared calender in my zimbra account (google agenda) which is awesome. However, when I change something in this calender I have to reload it manually by right-clicking it and clicking reload.

Login-out/in does not reload it, changing pages (mail/tasks) also does not reload it. Even the general "refresh" button on top of the calender page does not reload it.

Can this be changed, so
- the refresh button on top of the Calender also does a reload of externally linked calenders
- I can setup an automatic refresh of this external data when I am logged in when I change pages, every x minutes...
- I can have Zimbra refresh that data automatically even when I am not logged in.