Bug 391735

(I only noticed this with weekly occurrence, so I am only assuming it happens with other periods.) 
If I create an event with weekly recurrence, ending after 6 occurrences, it gets created correctly.  If I then add an exception on the second occurrence, the last date does not get extended by one week.  I claim that a date marked as an exception, is no longer an occurrence, so the end date should be extended by one more period.  If you claim this works as desired, then please convert this bug to a wish list for 1) change text to "after X period" (rather than occurrences) and add an option so that adding an exception does extend the last occurrence.  Perhaps this could be a pop-up when adding an exception to a recurring event by count: "Do you want to extend the final occurrence by one period?".