Sunbird and Lightning

i downloaded Lightning extension for thunderbird which added calendar capability.
My oracle calendar client now has icalendar support and so i could export my appts as icalendar and import them back into thunderbird.

Unfortunately i ran into the import bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=315672
described in the bug
http://forums.mozillazine.org/viewtopic.php?t=338880

The next version of sunbird should bear patch for that.