Thank you sharing your thoughts and for the provided workarounds. I believe that they will be helpful for other users that experience such issues.
As I mentioned in the support thread opened on the same subject, implementing such functionality, that will either notify the end user that the changes will be lost or to ask them whether to keep the exception changes, is in our TODO list. Currently, I am not be able to provide any specific time frame when it will be scheduled for development, as there are tasks with higher priority. The best will be to open a discussion in our Feedback portal, as thus more people can vote for it.
As a side note, Microsoft Outlook notifies the users that the exception changes will be lost when the whole series is re-scheduled, but does not give the ability to persists the changes. Because there are different implementations, such UserVoice discussion will be of a great help to find out which is the best behavior that users expects.
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