When a user creates a recurring event and tries to modify an occurrence of the event, they are asked if the user wants to modify the series of the occurrence.

Expected behaviour

When an event is being moved with the mouse the user should be asked if he/she wants to change the whole series, the current occurrence only or the occurrence and the future ones and the series shouldn't be broken.

Actual behaviour

When the user moves an occurrence around with the mouse, no such thing is being asked. After moving the occurrence with the mouse, the occurrence doesn't appears are one. It's now being handled as a single event while the other occurrences of the series are still handled as such. On the caldav interface the 3 events are still being linked.