preceding events are forgotten on modifying recurring events
When a recurring event is modified, the events preceding the modified event are deleted, even after the change is applied to 'All events'
How to reproduce:
- Create some recurring event and save Say, a daily recurring event "Test" from Sept. 1 to Sept. 10
- Now click the event on some other day to edit the event Say, click on "Test" from Sept. 3
- Now edit the event -> click Done -> Click 'All Events' Say, rename the event to "Testing"
Result: The events preceding Sept. 3 (1 and 2) are deleted. As the change is requested to be applied on All events, it shouldn't delete the past events.