Recurring appointment edit loses exceptions

[jazzcica]

I use recurring items quite a lot for various regular appointments. If I cancel or change one appointment in a series, everything is fine. However, if I edit the whole series, e.g., to put a different end date on it, then I lose all the changes I have made to individual instances. This means that I can't use the calendar as a diary, to go back, for example, to see how many times I cancelled last month. Any suggestions for how to keep the exceptions?
Thanks