Tim Nolan opened SPR-9771 and commented
Relevant interface is MutableTrigger - see http://quartz-scheduler.org/api/2.1.0/org/quartz/impl/triggers/AbstractTrigger.html#setCalendarName%28java.lang.String%29.
Not really a bug, but without this, a drop in replacement is not always possible. Could add other properties as well as 'setCalendarName'.
Affects: 3.1.2
Issue Links:
Backported to: 3.2.7