I updated our Network Edition to 5.0.7, I also updated iSync connector. The menu where I can choose which calendars to synchronize disappeared (which is a shame):

Anyways, when I click to sync calendars using CalDAV, I only see, that new
calendar section with the same name as my e-mail address appeared, with no
calendars under that section. I also don't see any events from my iCal calendars in Zimbra, as I used to.

Contact synchronization is working properly. Is it possible to get old way
of synchronization of calendars? What should I do?