I've found that if you click in the Duration field - try entering zero and/or the number of years (etc) to the End date - you can sometimes juggle the three values to work the way you want.
Hi, No there is no way to change the start date without changing the end date. If this was the case, then it would mean that durations of events would keep changing when people alter start dates, which also might cause annoyances for people who wanted to keep set durations. So we had to decide to keep one or the other, while having the other automatically change. Jess
ok, i undertand. maybe in the future there could be an option key or setting where you can choose the behavior. i have a lot of events where Im not sure of the exact dates so I put in good guesses, and when I get the hard date and if i dont pay attention, the end date is now wrong but I dont realize it.