new CMDlet parameters missing in Exchange 2013 CU9 KB3075700

When you upgrade your to some command are missing.

These you need wen you want more control over Sent Items when using shared mailboxes.

Whether a mailbox is used by multiple users as a communication tool, a shared mailbox remains an important requirement.
Early releases from 2013 there was a no way to configure this behavior.

In and Exchange 2013 CU9, this feature on shared mailboxes is disabled by default.

If you mis it run:
setup.exe /preparead /iacceptexchangeserverlicenseterms

Get-Mailbox -RecipientTypeDetails Shared | Set-Mailbox - $True
Get-Mailbox -RecipientTypeDetails Shared | Set-Mailbox - $True

https://support2.microsoft.com/kb/3075700/