Data Lifecycle Management: Separate Copilot retention policies from Teams chats

In a previous post I mentioned how Microsoft is adding the capability to use Purview Data Loss Prevention on Copilot to block certain information from surfacing for the user. Now, Microsoft is adding Copilot to it's retention policy controls, and starting mid-February, public preview tenants can start exploringthis new feature. Admins will be able to create separate retention policies for Microsoft Teams chats and Microsoft 365 Copilot interactions, and allows for a more tailored data management. The feature will of course require that the targeted users have Microsoft 365 Copilot license.  According to the message center, the public preview will be during February, and we can hope for a general release sometime in March. The feature will be available by default, but policies will have to be set up.

Backup-sfb has been updated to support 2019

I really didn't think I'd do it, but given the ammount of requests for it and a verification of versions included in Skype for Business 2019. I have decided to "officially" update my Backup script to SFB 2019.
It has not been thoroughly tested by me (as I don't have any customers using sfb2019 yet), and there is no guarantee it will back up everything. Feedback and suggestions are of course very welcome!

The script is also no longer signed. If I do get around to buy a new certificate, I might sign it again in the future.

As before, the script can be found at the technet gallery (link)