Updating with always doesn't change the end date before the current node

To reproduce:
1. Create a daily repeating event with an end time 2 hours later than the start time. (eg. 8:00 to 10:00)
2. In the calendar view, click the 5th or so event and then click edit.
3. Change both the start and end time to be one hour later than they are. (eg. 9:00 to 11:00), making sure that "Apply edit(s) to" is set to "Always". Submit the event.

Looking at the event in month view, you should see that the first four events now say 9:00 to 10:00. The event you edited and after say 9:00 to 11:00.

For some reason the first couple of event are getting the old event end time.

This exists in both HEAD and 4.7.x-2.x. Unsure if this also exists in 4.7.x-1.x