Exchange 2016 Calendar Appointments Disappearing

Hello,

I have a client with a large medical office that is having trouble with their calendar appointments. All of their medical providers use Outlook Calendars for appointment scheduling and most of the staff has Editor access to modify each of the medical providers' calendars. They've noticed since their upgrade from Exchange 2013 to 2016 that appointments seem to be disappearing on the shared calendars. This is how their environment has always been configured, minus the recent upgrade from 2013 to 2016.

Any ideas as to what might be going on?

Thank you
dwilliams4391Asked:
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Jian An LimSolutions ArchitectCommented:
you need to turn on mailbox auditing to see what really happening in the systems
https://technet.microsoft.com/en-us/library/ff459237(v=exchg.160).aspx
dwilliams4391Author Commented:
We upgraded the internet circuit in both locations and configured cached mode on Outlook. Issues seem to be resolved.

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dwilliams4391Author Commented:
No other answers given to resolve the issue, except for Mailbox Auditing, which was helpful, but not the solution.
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