When deleting single instance of repeating event, all previous entries removed too

[Helen Griffiths]

We've had a user report that when he has tried to remove a single instance of a repeating event in Team Calendars, that it has removed all previous entries of the same event type too.

I've tried to replicate the issue, however have been unsuccessful. There is nothing written in the logs that would suggest an issue / bug and I've had a scout around Google and the only bug i've found relates to an older version of Team Calendars which we aren't using...(https://jira.atlassian.com/browse/CONFSERVER-49406) 

We are using Confluence v6.0.1 and Team Calendars v5.3.16.

Has anyone come across anything like this before? ...or have any pointers as to what could cause the issue?

Any help would be gratefully received :)

[Brant Schroeder]

@Helen Griffiths I have never heard of a bug like this.  Are you sure that they user did not just delete all events?